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Chapter 6: Q.2 (page 153)

A ball tossed straight up has v = 0 at its highest point. Is it in equilibrium? Explain.

Short Answer

Expert verified

Because of the downward acceleration g, the ball is not in equilibrium at the highest position.

Step by step solution

01

Introduction

When an object is hurled straight up, the only force acting on it is gravity, which operates in the downward direction. The object's acceleration is equal to the acceleration due to gravity, g, which is equal to9.8m/s2.

02

Explanation 

Under the only pull of gravity, the ball is hurled straight up. The velocity of the ball decreases as it approaches the highest position. The ball, on the other hand, has a g acceleration that points downward. As a result of this downward acceleration, the ball is out of balance at its highest point.

As a result of the downward acceleration g, the ball is not at equilibrium at its highest point.

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