A crate remains stationary after it has been placed on aramp inclined at an angle with the horizontal. Which of the following statements must be true about the magnitude of thefrictional force that acts on the crate? (a) It is larger than theweight of the crate. (b) It is at least equal to the weight of thecrate. (c) It is equal to μsn. (d) It is greater than the componentof the gravitational force acting down the ramp. (e) It isequal to the component of the gravitational force acting downthe ramp.

A crate remains stationary after it has been placed on aramp inclined at an angle with the horizontal. Which of the following statements must be true about the magnitude of thefrictional force that acts on the crate? (a) It is larger than theweight of the crate. (b) It is at least equal to the weight of thecrate. (c) It is equal to μsn. (d) It is greater than the componentof the gravitational force acting down the ramp. (e) It isequal to the component of the gravitational force acting downthe ramp.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter6: Applications Of Newton's Laws

Section: Chapter Questions

Problem 134CP: In a television commercial, a small, spherical bead of mass 4.00 g is released from rest at t=0in a...

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Concept explainers

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?”

Question

A crate remains stationary after it has been placed on a
ramp inclined at an angle with the horizontal. Which of the following statements must be true about the magnitude of the
frictional force that acts on the crate? (a) It is larger than the
weight of the crate. (b) It is at least equal to the weight of the
crate. (c) It is equal to μ_sn. (d) It is greater than the component
of the gravitational force acting down the ramp. (e) It is
equal to the component of the gravitational force acting down
the ramp.

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