Suppose that the kinetic coefficient of friction between stone and grass is 0.7. A girl is sliding a stone cube (with mass = 8 kg) along the grass with a force of 72 N. What is the net force on the stone?

Q: 20 kg box sits on a level floor. The box does not move until you push on it with a horizontal force…

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Q: A 30.0 kg trunk is pushed across the floor of a moving van by a horizontal force. If the coefficient…

A: Frictional force is the opposing force that  exerted by a surface as an object moves across it. fr =…

Q: A 10 kg of box was put in a horizontal table. The static coefficient of friction is 0.15. What could…

A: Given(s): It is a horizontal table. Mass of the box, m=10 kg The static coefficient of friction is…

Q: An object of mass 4 kg originally suspended by a vertical cord is pulled by a horizontal force until…

A: Write the given data. m=4 kg In this case, if system is at rest then the tension in cord will be…

Q: You managed to pull a heavy crate up a ramp on a truck. The crate has mass 46 kg. You were pulling…

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Q: You managed to pull a heavy crate up a ramp on a truck. The crate has mass 50 kg. You were pulling…

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Q: A block with a mass of 5.84 kg is at rest on an inclined surface. The surface makes an angle of…

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Q: A 12.1 kgkg box sits on a horizontal table. A string with tension 30.6 NN pulls on the box to the…

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Q: is at rest on a horizontal floor.  A 22 kg child sits on top of the box.  A person pushes the box…

A: Net force = ma

Q: A 7.5 kg backpack is sliding across the floor. The coefficient of friction between the backpack and…

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Q: crate is at rest on a level surface. If the coefficient of static friction between the crate and the…

A: Given:- The mass of the object m = 40 kg  the coefficient of static friction between the crate and…

Q: A 3.47 kg block is placed at one end of a wooden plank that is 9.05 m long. The plank is slowly…

A:

Q: A crate of mass 61 kg lies on a flat floor.  A person exerts a horizontal force of 141 N on it. If…

A: Given applied force on the mass = 141 N The crate does not move.

Q: he top of a ramp, which is inclined at an angle of 20 degrees with respect to the horizontal.…

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Q: Bob and Jane are trying to pull a heavy box (m=500 kg) to the top of a ramp which is inclined at 15…

A: How hard to Bob and Jane have to pull the box in Newtons to get it to start moving up the ramp.…

Q: A box of mass 37 kilograms is being pushed as constant speed in a straight line across the floor by…

A:

Q: A stubborn, 115 kgkg mule sits down and refuses to move. To drag the mule to the barn, the…

A: Given: The mass of mule is m=115 kg. The maximum force is F=800 N. The static coefficients of…

Q: A 645 kg car is being pushed along a flat parking lot at a constant speed of 1.78 m/s. The…

A: The mass of the car, m=645 kg The velocity of the car, v=1.78 m/s The coefficient of friction…

Q: a girl is pulling her 6.8kg wagon along a horizontal sidewalk. the force exerted by the girl is 17 N…

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Q: Mary applies a force of 78 N to push a box with an acceleration of 0.49 m/s2. When she increases the…

A: The applied force in first case is 78 N and acceleration is 0.49 m/s2. The applied force in second…

Q: A 100kg table sits on a horizontal floor. The coefficient of static friction between the table and…

A: Given :  Mass of table, M =  100 kg  Mass of box, m = 20 kg  Coefficient of static friction, u = 0.4…

Q: A 55-kg box rests on a horizontal surface. The coefficient of static friction between the box the…

A: The mass of the box=55kg.The coefficient of static friction =0.30.The coefficient of kinetic…

Q: A box of mass 33 kg sits at rest on a ramp that makes an angle of 11 degreeswith the horizontal. The…

A: Draw the free-body diagram of the box.

Q: A wooden box of mass 30 kg slides on a concrete floor. What is the coefficient of friction if the…

A: Mass of box = 30kg Friction force act on body = 180N

Q: A 50 kg wooden crate rests on a horizontal concrete floor. The coefficient of friction is Ms= 0.7.…

A: Frictional force can be expressed as fs=μsN

Q: A person weights 686 Newtons. On their way home they see an Ice patch .they run and slide across the…

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Q: An object sitting at rest on a level surface has a weight and a normal force of 200 N. The…

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Q: A box weighing 50 N rests on a horizontal surface.  A person pulls with a force of 10N to the right…

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Q: 2 crates are connected to each other by a rope. One crate(m=17kg) is sitting by the ledge of a…

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Q: A block with a mass of 3.44 kg is sliding down an inclined surface. The surface makes an angle of…

A: The expression for the coefficient of kinetic friction by equating the forces along inclined surface…

Q: You are trying to walk up a steep hill. The coefficient of static friction is 0.62. What is the…

A: Given data: -  The coefficient of static friction is μ = 0.62.

Q: Lorna is decorating her apartment. She slowly pushes an 80 kg china cabinet across the wooden dining…

A: Given, mass of china cabinet m=80kg, friction force f=350N. Required: Coefficient of sliding…

Q: Sammy is doing a strength testing session on the turf in preparation for the upcoming basketball…

A: Mass of sled (m) = 105 kgCoefficient of static friction (us) = 0.3Sammy apply only horizontal…

Q: A flatbed truck is carrying a 30-kg crate up a sloping road at a constant speed. The coefficient of…

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Q: A 20 kg refrigerator was placed on the cement floor in the dining area. The coefficient of static…

A: Given data:  Mass (m) = 20 kg Coefficient of static friction (μs) = 0.25 Horizontal force (F) = 13 N…

Q: A 397 N crate rests on a ramp; the maximum angle just before it slips is 33° with the horizontal.…

A: Given Data : Weight of the crate is W=397 N. Angle of inclination of the ramp θ=33°.   Let the…

Q: A 30 kg object sits on a table. The coefficient of static friction between the object and the table…

A:

Q: A block is placed on a wooden plank, which is initially horizontal. One end of the plank is slowly…

A:

Q: A 51.9 kg crate is hung from the ceiling by two wires. Each wire makes an angle of 41 degrees with…

A:

Q: A child pulls a 20 kg sled with a rope that makes an angle of 30° with the ground. The tension in…

A:

Q: A man is walking up a hill inclined at 24 degrees at constant speed while pulling a 23.6 kg box by a…

A:

Q: A box of mass 10 kg is on the back of a flatbed truck. The tručk now travels down a 10° hill with an…

A: Mass of box on the back of the flatbed truck,(m)=10 kg-----(1) [Given] Now on traveling downhill,…

Q: A mass is suspended from the ceiling in an elevator by a heavy rope. The mass is 80 kg and the mass…

A: Let, the mass be, M=80 kg The mass of the rope, m=2 kg The maximum tension the rope can experience…

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: