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20 kg to newton

Convert 20 Kilograms to Newtons (kg to N) with our conversion calculator and conversion tables. To convert 20 kg to N use direct conversion formula below. 20 kg = 20 N. You also can convert 20 Kilograms to other Weight (popular) units 1 Newton in Earth gravity is the equivalent weight of 1/9.80665 kg on Earth. This is derived using Newton's second law f=ma and assuming Earth gravity of 9.80665 m/s 2 . 1 N (Earth) = 0.101971621297793 kg

Newtons (N): Newton is a unit of force in International System of Units (SI). It is denoted as N. The Newton is named after Isaac Newton because of his contribution in science. one newton force is equal to 0.1019716213 kilogram-force. Kilograms to Newtons (kgf to n): It is a free online Kilograms to newtons (kgf to n) force conversion converter Newton. Definition: The newton (symbol: N) is the SI (International System of Units) derived unit of force. It is defined as 1 kilogram·meter/second 2.. History/origin: The unit newton is named after Isaac Newton for his contribution to classical mechanics - particularly his second law of motion, which states that the rate of change of momentum of a body is directly proportional to the. Newtons and kg can't be directly converted, since newton is a unit of force, and kg is a unit of mass. On Earth only, something that weighs 120 newtons is about 12.24 kg of mass A Newton is equal to 1-kilogram meter per second squared. In general, Mass is a measure of the amount of matter in a particle or object. Mass of the object is determined by measuring the weight of an object. Here is the online kg to Newtons calculator to convert kg to N within the fractions of seconds Current use: As an SI derived unit of force, the newton is the preferred unit of force, and is widely used in scientific contexts, particularly in physics. In everyday use, units such as the pound-force are sometimes used in place of newtons in countries like the United States. Kilogram-force to Newton Conversion Tabl

20 Kilograms to Newtons 20 kg to N - ConvertWizard

  1. ›› Quick conversion chart of newtons to kilograms. 1 newtons to kilograms = 0.10197 kilograms. 5 newtons to kilograms = 0.50986 kilograms. 10 newtons to kilograms = 1.01972 kilograms. 20 newtons to kilograms = 2.03943 kilograms. 30 newtons to kilograms = 3.05915 kilograms. 40 newtons to kilograms = 4.07886 kilograms. 50 newtons to kilograms.
  2. One kilogram in weight and mass sense converted to newtons earth equals precisely to 9.81 N. How many newtons earth of weight and mass system are in 1 kilogram? The answer is: The change of 1 kg ( kilogram ) unit for a weight and mass measure equals = into 9.81 N ( newton earth ) as per its equivalent weight and mass unit type measure often used
  3. Newton is a unit of force, kilogram is a unit of weight, so the two are quite different. On Earth, the gravity is about 9.8 meters per second square, which is the same as 9.8 Newton per meter, so the 20kg. would weigh almost 196 Newton
  4. Kilogram is unit of mass while Newton is unit of force, so you can't convert kg into Newton and vice-versa. However, force can also be expressed in the unit of kilogram-force (kg-f). 1 kg-f is the weight corresponding to 1 kg mass. Thus, 1 kg-force is equal to g Newton
  5. 20 newtons are 2.04 kilograms. 3 people found this useful How many newtons are there in a kilogram? 1 kg = 10 N F = ma So, F = 1 Kg * 10 m/s 2 = F = 10 N That's an approximation (it's closer to 9.
  6. Instantly Convert Kilograms-force (kgf) to Newtons (N) and Many More Force Conversions Online. Kilograms-force Conversion Charts. Many Other Conversions

Kilograms to Newtons Kyle's Converte

Kg to Newtons - Kilograms to Newtons Force Conversio

The newton (abbreviation: N) is the unit of force in metric system (SI), named after Isaac Newton.The newton is equal to the amount of force needed to accelerate a one kilogram mass at a rate of one meter per second squared. 1 newton (N) = 0.101971621 kilogram-force (kgf) = 0.224808943 pounds force (lbf Definition. One newton is the force needed to accelerate one kilogram of mass at the rate of one metre per second squared in the direction of the applied force.. In 1946, Conférence Générale des Poids et Mesures (CGPM) Resolution 2 standardized the unit of force in the MKS system of units to be the amount needed to accelerate 1 kilogram of mass at the rate of 1 metre per second squared Conversion Newton meter to Kilogram meter. A newton meter is a unit of torque in the SI system. The symbolic form is Nm or N·m. One newton metre, sometimes hyphenated newton-metre, is equal to the torque resulting from a force of one newton applied perpendicularly to a moment arm which is one metre long The kilogram-force (kgf or kg F), or kilopond (kp, from Latin pondus meaning weight), is a gravitational metric unit of force.It is equal to the magnitude of the force exerted on one kilogram of mass in a 9.806 65 m/s 2 gravitational field (standard gravity, a conventional value approximating the average magnitude of gravity on Earth) If you exert a force on an object (Newtons) for a certain number of seconds, the object will achieve a certain momentum (kg m/s). To convert from one to the other, you have to say how many seconds. The momentum is equal to the force in Newtons times the number of seconds

Convert newtons to kg - unitconverters

  1. Example Conversion Newtons to Kg & tons to dynes (pt 3) One kg Equal To Newton | Unit conversion Kilo newton to Kilo gram.
  2. e the equivalent value in newtons per sq mm. Alternatively you can use our pressure converter to convert any value
  3. This also happens to be the weight of the body. In the MKS system, weight is measured in Newtons, where 1 Newton = 1 kg-m/s 2.Once you have measured the mass of a body in kilograms and calculated its weight in Newtons using the value 9.8 m/s 2 for g, you can easily convert to Gs and back again
  4. Newton Per Cubic Meter (abbreviations: N/m3, or Npm3): is an SI derived unit of density, defined by mass in newton divided by volume in cubic meter. How to Convert Kilograms Per Cubic Meters to Newton Per Cubic Meters Example: How many newton per cubic meters are equivalent to 27.33 kilograms per cubic meters
  5. You interpreted kg wt as mass*weight. A kilogram weight is a unit of force. Specifically, it is the force needed to make a mass of 1 kg accelerate by 9.80665 m/s 2

How much is 20 kilograms in Newtons - answers

kg to Newtons Calculator Mass to Newtons Converte

Weights and Measurements. A millitorr (mTorr) is a unit of pressure applied by a depth of 0.001 of millimeter of mercury (mmHg). Power is defined as energy transferred from or to an object by a force on the object per unit of time Start studying LAWS OF FORCE AND MOTIN: TEST REVIEW. Learn vocabulary, terms, and more with flashcards, games, and other study tools Online calculator to convert pounds to kilograms (lb to kg) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Weight or Mass units

Pascals to Kilogram force per square meter (Pa to kg/m2) conversion calculator for Pressure conversions with additional tables and formulas Use this conversion tool to convert between newton-meters (Nm) and foot-pounds (ft-lb), both of which are units of work, energy or torque (pound-foot).To use the converter below, simply select your desired conversion units and enter your figure into the 'value' box

How to convert kilogram force centimeters to newton meters [kgf-cm to N⋅m]:. τ N⋅m = 0.0980665003 × τ kgf-cm. How many newton meters in a kilogram force centimeter: If τ kgf-cm = 1 the Nowadays, the most common is the international avoirdupois pound which is legally defined as exactly 0.45359237 kilograms. A pound is equal to 16 ounces. Kilograms : The kilogram (or kilogramme, SI symbol: kg), also known as the kilo, is the fundamental unit of mass in the International System of Units. Defined as being equal to the mass of the. Learn how to convert from kilograms-force per square centimeter to bars and what is the conversion factor as well as the conversion formula. 20 bars are equal to 19.6133 kilograms-force per square centimeter

Newtons to Pound-force. Convert between the units (N → lbf) or see the conversion tabl A mass of 20 kilograms is the equivalent of 44.09 pounds. One kilogram is the base unit of mass used in the International System of Units, whereas pounds are a measurement of mass used in the imperial system Your Source for Automatic Drills, Multiple Spindle Heads, and mor F = 20 kg * 3 m/s 2. F = 60 N. Newtons are a derived unit, equal to 1 kg-m/s². In other words, a single Newton is equal to the force needed to accelerate one kilogram one meter per second squared. Further Reading. Newton's Second Law - Wolfram Demonstration Project; Newton's Second Law - Khan Academ

kg to tons How to convert Tons to Kilograms. 1 ton (t) is equal to 1000 kilograms (kg). 1 t = 1000 kg. The mass m in kilograms (kg) is equal to the mass m in ton (t) times 1000 How Do You Convert KN to Kg? Home Business & Finance Currency & Conversions Kilonewton (kN) can be converted into kilograms (kg) by first multiplying the value of kN by 1000 and then dividing it by earth's gravity, which is denoted by g and is equal to 9.80665 meter per second Kilograms per square centimeter can be expressed using the formula: 1 kgf/cm 2 = 1 kgf cm 2. Pressure in kilograms per square centimeter are equal to the kilogram-force divided by the area in square centimeters Newton's Second Law Change of motion is proportional to the force applied, and take place along the straight line the force acts. Newton's second law for the gravity force - weight - can be expressed as. W = F g = m a g = m g (1) where. W, Fg = weight, gravity force (N, lb f) m = mass (kg, slugs

Convert kg to newtons - unitconverters

Kg to Pounds How to convert Pounds to Kilograms. 1 pound (lb) is equal to 0.45359237 kilograms (kg). 1 lb = 0.45359237 kg. The mass m in kilograms (kg) is equal to the mass m in pounds (lb) times 0.45359237 While a kg is a unit of mass, a kN is a unit of force. The unit of measurement for kN is the Newton, defined as the force of earth's gravity required to move 100g (0.1 kg). Since force is defined as mass multiplied by acceleration , we must apply some sort of acceleration to our unit of mass (kg) in order to get kN

Convert newtons to kilograms - Conversion of Measurement Unit

Newton's Second Law of Motion study guide by lizzyN17 includes 69 questions covering vocabulary, terms and more. Quizlet flashcards, activities and games help you improve your grades Metric tons (tonnes) and kilograms are both units used to measure weight. Learn more about weight and find more weight measurement conversion calculators. Metric tons are a metric measurement and can be abbreviated as t, for example 1 t. Kilograms are a metric measurement and can be abbreviated as kg, fo A newton is a unit of measurement named after Sir Isaac Newton. It measures force and has units of kilogram meter per second squared. This lesson will describe the newton There are 907.18 kilograms in a US short ton, 1016.04 kilograms in a UK long ton and 1000 kilograms in a metric ton. How to convert from tons to kilograms (kg)? To find out how many kilograms there are in x tons, multiply the number of tons by 907.18 for US short ton, 1016.04 for UK long ton or 1000 for the metric ton

Share Kilonewton (kN - Metric), mass. The newton (symbol: N) is the SI unit of force. It is named after Sir Isaac Newton in recognition of his work on classical mechanics.A newton is the amount of force required to accelerate a mass of one kilogram at a rate of one meter per second squared Convert watt [W] <—> newton meter/second [N·m/s] 20-40 kilowatts this calculator shows that a person 170 cm tall and weighing 70 kg will produce a power. 36 kg is simply a measure of the mass of an object which will be the same anywhere in the universe, so to find the weight of this object on the moon you would simply multiply by the gravitational force of the moon which is 1.6 m/s^2 which will give you 57.6 Newtons (1) 64 kg (2) 20 kg (3) 12 kg (4) 4.0 kg 4. Base your answer to the following question on the diagram below which shows a 20-newton force pulling an object up a hill at a constant rate of 2 meters per second. 300 10m The magnitude of the momentum of the moving velocity of the cannon? m -1000 kg (I) 5m/s 500 m/sec m = 10 kg (3) 10 m/s (4) 500 m/

Printable Torque Conversion Chart Metric to English - Newton-meters to Inch Pounds If a 20 kg wagon is pulled with a force of 80 Newtons, how much will it accelerate? Physics Acceleration Newton Newtons Forces Meters Kilograms Volleyball Moon. Use this pressure converter to convert instantly between bars, gigapascals, kilopascals, millibars, newtons per square meter, pounds per square inch and other metric and imperial pressure units. Default rounding is set to a maximum of 14 decimal places. A full list of unit conversions is available here. If you like this website, please tell. A constant eastward horizontal force of 70. newtons is applied to a 20.-kilogram crate moving toward the east on a level floor. If the frictional force on the crate has a magnitude of 10. newtons, what is the magnitude of the crate's acceleration

A horizontal 20.-newton force is applied to a 5.0-kilogram box to push it across a rough, horizontal floor at a constant velocity of 3.0 meters per second to the right. What is the coefficient of kinetic friction between the box and the floor Yes, but just to be clear I'll restate it: Newton's 2nd law says that the acceleration of an object is related to its mass and the net force on it according to: a = F/m. . If F is measured in N, and m in kg, then a will be in m/s/s (which is equivalent to N Newtons In honor of Sir Isaac Newton the unit of force is the Newton (abbreviation is N). A Newton is the force it takes to make 1 kg change its velocity by 1 m/s every second

That's why an object that has 20 kilograms of mass on earth also has 20 kilograms of mass while on the moon, even though it would only weigh 1/6 as much. It weighs 1/6 as much on the moon because the force of gravity on the moon is 1/6 of what it is on Earth. Read on for information about and tips on calculating weight from mass Alternatively, you can use the third equation. In this case, you need to divide force (poundals in US and newtons in SI) by mass (pounds in US and kilograms in SI) obtaining pdl/lb or N/kg. It's basically the same thing since poundal is pdl = lb * ft/s² and the newton is N = kg * m/s² 13 At a certain location, a gravitational force with a magnitude of 350 newtons acts on a 70.-kilogram astronaut. What is the magnitude of the gravitational field strength at this location? (1) 0.20 kg/N (2) 5.0 N/kg (3) 9.8 m/s2 (4) 25 000 N•kg 38 Four forces act concurrently on a block on a horizontal surface as shown in the diagram below

Convert kilograms kg into newtons earth N weight and mass for

Force is stared in the unit of Newtons (N). 1 Newton equals 1 kg/m/s 2. An object with a mass of 2.0 kg accelerates 2.0 m/s 2 when an unknown force is applied to it. What is the amount of the force? 4 N An object with a mass of 5.0 kg accelerates 8.0 m/s 2 when an unknown force is applied to it A 150-N rightward force is applied to a 20-kg box to accelerate it to the right across a rough surface at a rate of 2.0 m/s/s. Part F: Problem Solving For the following problems, draw free-body diagrams and solve for the requested unknown Converison of pressure or stress units Definition: pressure = force per area; p = F/A; F = force, A = area, p = pressure The SI unit of the pressure is the pascal with the formula sign Pa. 1 Pascal is equal to the pressure of 1 newton per square meter. 1 Pa = 1 N / m 2 ≡ 1 kg / m · s 2 This on the web one-way conversion tool converts torque or moment of force units from kilogram force meters ( kgf m ) into newton meters ( N m ) instantly online. 1 kilogram force meter ( kgf m ) = 9.81 newton meters ( N m ) Type GP grey cement is ideal for use in structural concrete, mortars, renders, grouts and cement based products. Continue reading

20 kg = how many newtons? Yahoo Answer

I'm working on a problem for physics in which I found the resultant of two forces on a car (770 Newtons) and the car weighs 3000 kg. I put it in the formula F=ma so it looked like 770N=3000kg*A and I don't know if you can divide those two units by each other to get acceleration A horizontal 20.-newton force is applied to a 5.0-kilogram box to push it across a rough, horizontal floor at a constant velocity of 3.0 meters per second to the right. Determine the magnitude of the force of friction acting on the box #18 Impulse: Fundamental Aspects A 20 Newton force acts for 1.5 seconds. What is the impulse associated with the A. 0.0 kg m/s B. 15 kg m/s ° C. 20 kg m/s D, 30 kg m/s #19 Impulse and Rocketry A rocket ship has The aim is for the ship to attain a speed of 1,200 m/s. 10 seconds to achieve this

How to convert kilograms to Newtons - Quor

  1. INCH POUND TO NEWTON METER (in lb TO Nm) FORMULA . To convert between Inch Pound and Newton Meter you have to do the following: First divide 0.112984825 / 1 = 0.11298483.
  2. grain to newton converter 1 grain (gr) is equal 0.00063546023075152 newton (Earth) use this converter newton to grain converter 1 newton (Earth) is equal 1573.6626016979 grain (gr) use this converter pound to tonne converter 1 pound (lb) is equal 0.00045359237 tonne (t) use this converter tonne to pound converte
  3. * 20 Kg, wide capacity, high resolution, high accuracy, high repeatability. * 3 kind display unit : Kg, LB, Newton. * Tension & compression capability . * Peak hold ( Max. load ) can be held in display during make tension or compression measurement. * Zero button can operate both for normal measuring & the peak hold operation
  4. Weight conversion calculator - Conversions for milligrams, grams, ounces, pounds, kilograms, carats, grains, mommes, newtons, ticals, pennyweight and troy ounces
  5. Newton: Newton, the absolute unit of force in the International System of Units (SI units). It is defined as that force necessary to provide a mass of one kilogram with an acceleration of one metre per second per second

How many kilograms are in 20 newtons - answers

The unit for force is named after Isaac Newton, and it is called the 'Newton', abbreviated 'N'. One Newton is one kilogram-meter per second squared. Another almost identical way to think about the force unit is that one Newton is the size of a force needed to accelerate a mass of one kilogram at a rate of one meter per second squared, as in 20 kilograms equal 44.092452437 pounds (20kg = 44.092452437lbs). Converting 20 kg to lb is easy. Simply use our calculator above, or apply the formula to change the length 20 kg to lbs Base your answers to questions 1 through 5 on the diagram below which represents a 3.0-kilogram mass being moved at a constant speed by a force of 6.0 Newtons. 1. What is the change in the kinetic energy of the mass as i

Converting from Newton meters to pound force feet requires you to keep a few very important things in mind. Convert Newton meters to pound force feet with help from a professional math and physics. One newton is the force needed to accelerate one kilogram of mass at the rate of one metre per second squared in the direction of the applied force.. In 1946, Conférence Générale des Poids et Mesures (CGPM) Resolution 2 standardized the unit of force in the MKS system of units to be the amount needed to accelerate 1 kilogram of mass at the rate of 1 metre per second squared

Gerenal Purpose Concrete is a high quality well-proportioned mix of blended cement, 10mm crushed stone and sand. This 25 MPa concrete is suitable for all non-structural applications such as garden paths, stepping stones, patios, light foundations and post hole filling Convert 20 kg to stones and lbs. 20 kg to stones and lbs - Convert kilos to stones to pound Weight is a force and is measured in Newtons Weight - The force of gravity acting on an objectThe force of gravity acting on an object Mass - The amount of matter in an object 3 Weight Weight is calculated: mass × free-fall acceleration Weight comes from Newton's 2 nd law: F = ma →W = mg 4 Weight Example 1 m = 20 kg g = 9.8 m/s

Kilograms-force to Newtons Kyle's Converte

A 4-kg block is acted on by three horizontal forces. What is the horizontal acceleration of the block? a) 10 N b) 20 N c) 25 N d) 30 N e) 40 N From F=ma, the acceleration is given by: a = F/m = (20 N) / (4 kg) = 5 m/s2 directed to the right A useful interactive conversion tool, with many more units, is Engineering Exchange's online Unit Conversions program. Another tool, by Joshua Madison, may be downloaded here (no length conversions; remember, pressure has the same units as stress) Numberfactory.com Home of Conversions & Useful Formulas Torque Conversion 1. Base your answer to the following question on the diagram below which shows a 20-newton force pulling an object up a hill at a constant rate of 2 meters per second. A) 0 kg-m/s B) 10 kg-m/s C) 100 kg-m/s D) 600 kg-m/s The magnitude of the momentum of the moving object is A) 64 kg B) 20 kg C) 12 kg D) 4.0 kg Kilogram or Kilogram Force per Square Centimeter (kg/cm2 or kgf/cm2) is a pressure unit that has been largely superseded by the SI unit system of pascal units. It is the metric equivalent of pounds per square inch (psi). 1 kg/cm2 equals 98,066.5 pascals. Similarly to psi, kg/cm2 is part of a group of pressure units that relate pressure with weight

What do Kilonewton [kN] and Dekanewton [daN] mean? The newton (symbol: N) is the International System of Units (SI) derived unit of force. It is named after Isaac Newton in recognition of his work on classical mechanics, specifically Newton's second law of motion 1 kilogram (kg) = 1 liter (l).Kilogram (kg) is a unit of Weight used in Metric system. Liter (l) is a unit of Volume used in Metric system. Please note this is weight to volume conversion, this conversion is valid only for pure water at te

! the Newton, N, is defined to be the force required to impart an acceleration of 1 m/s2 to a 1 kg mass there are other units, e.g. pounds (lb) we could use, but let's stick to SI (metric) for no 17. A 15 kg box falls off the back of a truck traveling at 20 m/s. It comes to rest in 12 meters. Determine the coefficient of friction between the box and the road. 18. A gardener pushes down along the handle of a lawn mower of 20 kg mass with a force of 150 N. The handle makes an angle of 60° with the ground

KG to N Conversion Tool - Clean CS

(1) A force of 100 newtons accelerates a mass of 5 kg for 10 seconds. If the mass is initially at rest, calculate the final velocity. Firstly it is necessary to calculate the acceleration. F = 100 newtons. m = 5 kg. t =10 seconds. u = initial velocity = 0 since the object is at rest. F = ma so a = F/m = 100/5 = 20 m/s 2. v = u + at = 0 + 20 x. Apr 20, 2019 · For many years, the Rev. Howard M. Haywood would step to the pulpit each Sunday at Myrtle Baptist Church in West Newton and address the congregation: Good morning, church. It's good to be in. Convert from Kilogram force per square meter to Kilopasca

How to Convert Newtons to Kilogram-Force Sciencin

Steps to Solving Newtons Laws Problems. similar to projectiles (x­y) isolation 1 ­ A man pushes a 20 kg box with a force of 200N and it accelerates at 2 m. 12.5 N, 3.54 m/s2 (b) 5.3 kg _____1. Two blocks are pushed along a horizontal frictionless surface by a force of 20 N to the right, as shown above. The force that the 2-kilogram block exerts on the 3-kilogram block is A. 8 N to the left B. 8 N to the right C. 10 N to the left D. 12 N to the right E. 20 N to the left _____2 One American nickel has a mass of 0.005 kg, so 20 nickels would weigh one Newton. It would take 50 dimes to equal one Newton since each dime weighs 2.268 grams. One American dollar has a weight of 1 gram, which means that 102 one dollar bills would weigh one Newton. There are many things that weigh one Newton in fast food restaurants

necessary to pull up a 200 newton box? You have a 200 kg bag being lifted with a block and tackle. If you pull with 100 newtons what is the MA of the system? A 10 N force pulls to the right and friction opposes 2 N. If the object is 20 kg, find the acceleration. 1. Machine 2. Fin 3. Fout 4. Pulley A.The force you put into a machine En massa på 1 kg utövar vid normalacceleration således en kraft av 9,80665 N. En newton motsvarar en joule per meter. Kraft mäts med hjälp av en dynamometer. Äldre enheter för kraft är kilopond och dyn. Multipelenheter. Newton används tillsammans med SI-prefix för att bilda större och mindre enheter

the change in object's momentum ∆p. Lecture 18 10/26 Question 1 A 10 kg cart collides with a wall and changes its direction. What is its change in x-momentum ∆p x? a. −30 kg m/s b. −10 kg m/s c. 10 kg m/s d. 20 kg m/s e. 30 kg m/s x y What was the impulse exerted on the cart by the wall?? Lecture 18 11/26 Graphical Interpretation of. 3. Legend has it that Isaac Newton discovered gravity when a 0.20 kg apple fell 7.0 m from a tree. How fast was it going when it hit Newton's head? 4. A 28 kg boy slides down a ramp from a height of 4.8 m. How fast is the child going at the bottom of the slide? 5. An archer puts a 0.30 kg arrow to his bow. The bow has a spring constant. A kilogram is a unit of mass in the Metric System. The symbol for kilogram is kg. The base unit for a kilogram is gram and the prefix is kilo. The prefix kilo is derived from the Greek chilioi meaning thousand and is symbolized as k in the Metric System This on the web one-way conversion tool converts torque or moment of force units from kilogram force centimeters ( kgf cm ) into newton meters ( N m ) instantly online. 1 kilogram force centimeter ( kgf cm ) = 0.098 newton meters ( N m ) PHYSICS 11 FORCES & NEWTON'S LAWS WORKSHEET 4 1. Two boxes of mass 12 kg and 10 kg are resting on a frictionless surface and connected by a lightweight cord. The 12 kg mass is pulled by a force of 40 N. Calculate th I'll assume there is no friction between the mass and the table. If this is the case, then by Newton's third law of motion, the mass exerts a force of color(red)(20color(white)(l)N on the spring scale: If the spring scale exerts a force of 20 N on the mass, then the mass exerts a force of 20 N on the spring scale (which is in the opposite direction)

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