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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 15.0-lb block rests on a horizontal floor, (a) What force does the floor exert on the block? (b) A rope is tied to the block and is run vertically over a pulley. The other end is attached to a free-hanging 10.0-lb object. What now is the force exerted by the floor on the 15.0-lb block? (c) If the 10.0-lb object in part (b) is replaced with a 20.0-lb object, what is the force exerted by the floor on the 15.0-lb block?

(a)

To determine
The force exerted by the floor on the block.

Explanation

Given info: The weight of the block is 15.0 lb.

The normal force (N) on the block equals the weight (W).

N=W

Substitute 15

(b)

To determine
The force exerted by the floor on the block when the 10.0 lb object hangs.

(c)

To determine
The force exerted by the floor on the block when the 20.0 lb object hangs.

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