Question

Problem 11a

Answer 1

Given information

It is given that:

A pendulum swings in absence of friction

Step-by-step explanation

Step 1.

Consider a pendulum having a bob of mass , which is set into motion from its mean position by giving a slight push to the bob

When the bob is at it mean position , and we slightly disturb the pendulum by giving a slight push we impart velocity to the bob of the pendulum.

As a result at the mean position   , the bob possess Kinetic energy( by virtue of the velocity)