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 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 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 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?
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 woman exerts a horizontal force of 145 N on a crate with a mass of 38.7kg.
(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.)
Chapter 5 Solutions
University Physics with Modern Physics, Volume 2 (Chs. 21-37); Mastering Physics with Pearson eText -- ValuePack Access Card (14th Edition)
Physics for Scientists and Engineers with Modern Physics
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