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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

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 μsn. (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.

(a)

To determine

To say True or False: It is larger than the weight of the crate.

Explanation

When two objects are in contact, friction force opposes the relative lateral motion. It can either be static friction or kinetic friction depending upon the state of rest or motion...

(b)

To determine

To say True or False: It is at least equal to the weight of the crate.

(c)

To determine

To say True or False: It is equal to μsn .

(d)

To determine

To say True or False: It is greater than the component of the gravitational force acting down the ramp.

(e)

To determine

To say True or False: It is equal to the component of the gravitational force acting down the ramp.

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