Chapter 14, Problem 42A

To determine

The dependence of period of pendulum on the mass of bob, the length of spring, the amplitude of oscillation.

Answer to Problem 42A

The period of pendulum depends on length of string and not on mass of bob or the amplitude of oscillation.

Explanation of Solution

Introduction:

A pendulum comprises of a light string attached at single end to a pivot point and tied to a mass at the different end.

The time taken by pendulum to make one full to-and-fro oscillation is the period of pendulum.

The period of pendulum isindependent of the mass of the bob.The period of pendulum depends only on the length of pendulum.

The period also does not depend on the amplitude of oscillation.

Conclusion:

Hence, period of pendulum depends on length of string and not on mass of bob or the amplitude of oscillation.