10.0 kg box rests on a horizontal floor. The coefficient of static friction is 0.40 and the coefficient of kinetic friction is 0 30. Determine the force of friction, acting on the box if a horizontal applied force is exerted on it of magnitude: (A) 0, (B) 10 N, (C) 20 N, (D) 38 N, and
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- A 10.0 kg box rests on a horizontal floor. The coefficient of static friction is 0.40 and the coefficient of kinetic friction is 0 30. Determine the
force of friction , acting on the box if a horizontal applied force is exerted on it of magnitude: (A) 0, (B) 10 N, (C) 20 N, (D) 38 N, and (E) 40 N.
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- A box of bananas weighing 40.0 N rests on a horizontal surface.The coefficient of static friction between the box and the surfaceis 0.40, and the coefficient of kinetic friction is 0.20. If no horizontal force is applied to the box and the box is at rest, how large is the friction force exerted on it?Our 10.0-kg mystery box rests on a horizontal floor. The coefficient of static friction is 0.40 and the coefficient of kinetic friction is 0.30. Determine the force of friction, acting on the box if a horizontal applied force is exerted on it of magnitude: (a) 0, (b) 10 N, (c) 20 N, (d) 58 N, and (e) 40 N.A box of bananas weighing 40.0 N rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.40, and the coefficient of kinetic friction is 0.20. (a) If no horizontal force is applied to the box and the box is at rest, how large is the friction force exerted on it? (b) What is the magnitude of the friction force if a monkey applies a horizontal force of 6.0 N to the box and the box is initially at rest? (c) What minimum horizontal force must the monkey apply to start the box in motion? (d) What minimum horizontal force must the monkey apply to keep the box moving at constant velocity once it has been started? (e) If the monkey applies a horizontal force of 18.0 N, what is the magnitude of the friction force and what is the box’s acceleration?
- A block of mass m1 = 3.9 kg is placed on top of a block with mass m2 = 5.4 kg. A force, F = is applied to m2, at an angle 16.1 degrees above the horizontal. If the coefficient of static friction between all moving surfaces is 0.42 and the coefficient of kinetic friction is 0.32, determine the magnitude of the minimum force that will get the blocks moving.A 3.5 kg block is pushed along a horizontal floor by a force of magnitude 15 N at an angle 40 with the horizontal . The coefficient of kinetic friction between the block and the floor is 0.25. Calculate the magnitudes of (a) the frictional force on the block from the floor and (b) the block’s acceleration.A filing cabinet weighing 556 N rests on the floor. The coefficient of static friction between it and the floor is 0.68, and the coefficient of kinetic friction is 0.56. In four different attempts to move it, it is pushed with horizontal forces of magnitudes (a) 222 N, (b) 334 N, (c) 445 N, and (d) 556 N. For each attempt, calculate the magnitude of the frictional force on it from the floor. (The cabinet is initially at rest.) (e) In which of the attempts does the cabinet move?
- A person pushes horizontally with a force of 200. N on a 56.0 kg crate to move it across a level floor. The coefficient of kinetic friction is 0.19. (a) What is the magnitude of the frictional force? (b) What is the magnitude of the crate's acceleration?A woman exerts a horizontal force of 109 N on a crate with a mass of 38.7 kg. (a) If the crate doesn't move, what's the magnitude of the static friction force (in N)? (b) What is the minimum possible value of the coefficient of static friction between the crate and the floor? (Assume the crate remains stationary.)A block (mass = 200.00 g) is placed on an inclined plane 45 degrees from the horizontal. The coefficient of static and kinetic friction between the block and the plane are 0.54 and 0.35, respectively. What is the frictional force between the block and the plane?
- A box of banana weighing 40.0 N rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.40, and the coefficient of kinetic friction is 0.20. (a) If no horizontal force is applied to the box and the box is at rest, how large is the friction force exerted on the box? (b) What is the magnitude of the friction force if a monkey applies a horizontal force of 6.0 N to the box and the box is initially at rest? (c) What minimum horizontal force must the monkey apply to start the box in motion? (d) What minimum horizontal force must the monkey apply to keep the box moving at constant velocity once it has been started? (e) if the monkey applies a horizontal force of 18.0 N, what is the magnitude of the friction force and what is the box's acceleration?The coefficient of static friction between a 2.0 kg box and a plane inclined 28° to the horizontal is 0.65. What maximum applied force can be exerted on the box without moving it?A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. She pulls with a force of 130.0 N at an angle of 16.0° above the horizontal. The box has a mass of 25.0 kg, and the coefficient of kinetic friction between box and floor is 0.300. (b) The student now starts moving the box up a 10.0° incline, keeping her 130.0 N force directed at 16.0° above the line of the incline. If the coefficient of friction is unchanged, what is the new acceleration of the box?