A block weighing 200 N is pushed along a surface. If it takes 80 N to get the block moving and 40 N to keep the block moving at a constant velocity, what are the coefficients of friction μs and μk?

Q: A heavy, rough crate sits on an inclined plane. The weight of the crate is 60N.  The plane is…

A: For solving this problem first we need to draw free body diagram of object and then compare the…

Q: A block weighing 67.5 N rests on a plane inclined at 25.0° to the horizontal. A force F is applied…

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Q: A box of mass M = 5.0 kg is on a rough ramp inclined at an angle 0 = 30° to the horizontal as shown.…

A: Consider the normal force as N, friction force as f, force due its mass as W = mg. Draw the free…

Q: am designing a ramp to slide boxes down. The angle of the ramp is 35º. A plastic box massing 30 kg…

A: angle of friction          tanθ=μ if  μ > μs=k  then no slide  μ < μs=k   slide

Q: In an experiment, a student exerts a force of 18.0 N on a 8.75 kg oak block to keep it moving at a…

A:

Q: A block of mass m is pulled, via pulley, at constant velocity along a surface inclined at angle θ.…

A: Use the Newton’s second law of motion along the vertical direction is

Q: A 6.2 kg object is pulled along a horizontal surface by a force of 22.0 N.  If the acceleration of…

A: If a body is moving with a force F  to a particular direction the frictional force acts on the…

Q: A rope pulls on the lower block in the figure with a force of 46.2 N. The coefficient of kinetic…

A: Let, acceleration of lower block is a. Mass of upper block, m1=2.5 kg Mass of lower block, m2=4 kg…

Q: A block of mass m = 19.5 kg rests on an inclined plane with a coefficient of static friction of μs =…

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Q: A worker applies a constant horizontal force of magnitude 97.81 N to a box with mass 2.18 kg resting…

A: Horizontal force applied to the box is Mass of box is Box is resting on the floor.Note:Find:Weight…

Q: A box of banana weighing 40.0 N rests on a horizontal surface. The coefficient of static friction…

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Q: You managed to pull a heavy crate up a ramp on a truck. The crate has mass 47 kg. You were pulling…

A:

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 4.870 kg block of wood rests on a steel desk. The coefficient of static friction between the block…

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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: A box is initially sliding up a 32.5° incline at a speed of 13.0 m/s. The coefficients of friction…

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Q: In the figure here, a box of Cheerios (mass mc = 1.80 kg) and a box of Wheaties (mass mw = 3.40 kg)…

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Q: You push a box horizontally along level ground but friction is causing the box to slow down. The…

A: For the first part Let the force of friction be f. Let the force applied on the box is F. Let the…

Q: You are pushing a rubber crate against a concrete floor. The two surfaces have a static coefficient…

A: when some force is applied against friction at first it will try to overcome the static friction.…

Q: A horizontal force of magnitude F = 56.2 N pushes on a block of mass m = 5.87 kg. The block is on a…

A: The objective of the question is to find the acceleration of the block on the incline in terms of…

Q: Two workers are sliding 390 kg crate across the floor. One worker pushes forward on the crate with a…

A: Consider two workers sliding the crate of mass m, one by pushing in right hand(say) direction with…

Q: A heavy sled is being pulled by two people. The coefficient of static friction between the sled and…

A: The force of gravity acting on the sled is. The force of static friction on sled is.

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

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Q: Mary applies a force of 71 N to push a box with an acceleration of 0.41 m/s². When she increases the…

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Q: A hunter is pulling his sled 45 kg in mass behind him on snow. He exerts a pull of 170 N in…

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Q: mass of 3.52 kg object is attached to a string. If the force of tension in the string is 52.2 N j,…

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Q: A person pushes horizontally with a force of 200. N on a 56.0 kg crate to move it across a level…

A:

Q: A coin is resting on the surface of a closed book. As you slowly open the cover, the coin remains in…

A: The angle of repose is the maximum angle at which any object remains stable. It's the threshold…

Q: a block of mass m = 10.2 kg sitting on a ramp that makes an angle θ = 21° with the horizontal. This…

A:

Q: A horizontal force of magnitude F = 47.6 N pushes on a block of mass m = 6.08 kg. The block is on a…

A:

Q: A block is pressed against a vertical wall by a force F, as the drawing shows. This force can either…

A:

Q: A body weighing 350 kg rests on a plane inclined 30° with the horizontal. The angle of static…

A: Given: Mass of an object=m=350 kg The angle of inclination of plane=θ=30°  The angle of static…

Q: If a mass of 3.46 kg object is attached to a string. If the force of tension in the string is 50.2…

A: Given data: Mass of object is, m=3.46 kg. Tension force is, T→=50.2 N j.

Q: Just like Louis, Maria left a book on the roof of her car before driving away. The mass of the book…

A: Given, mass of the book, m = 725 gm coefficient of static friction between the book and the roof…

Q: You are pulling a 72-kg box at a constant speed of 7.4 m/s. If you're pulling the rope with a force…

A: Mass of the box,m= 72 kg Speed of box,v=7.4 m/s Force on the rope,F=300 N at an angle,θ=37°

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”