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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 ball is held in a person’s hand. (a) Identify all the external forces acting on the ball and the reaction to each. (b) If the ball is dropped, what force is exerted on it while it is falling? Identify the reaction force in this case. (Neglect air resistance.)

(a)

To determine
The external forces acting on a ball at rest and its reaction force.

Explanation

The ball on the hand is initially at rest. Unless a force acts on it, the ball will continue to be at the state of rest.

The formula for the force of gravity is given by,

F=Gmembr2

(b)

To determine
The external forces acting on a ball dropped and its reaction force.

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