A simple pendulum of string|SIMPLE HARMONIC MOTION|JEEMAIN

JEE-MAIN 2019

12-01-2019 S1

Question

A simple pendulum, made of a string of length $I$ and a bob of mass $m$, is released from a small angle $\theta 0$. It strikes a block of mass $M$, kept on a horizontal surface at its lowest point of oscillations, elastically. It bounces back and goes up to an angle $\theta_1$. Then M is given by

Select the correct option:

$\mathrm{m}\left(\frac{\theta_0+\theta_1}{\theta_0-\theta_1}\right)$

$\frac{\mathrm{m}}{2}\left(\frac{\theta_0-\theta_1}{\theta_0-\theta_1}\right)$

$\frac{\mathrm{m}}{2}\left(\frac{\theta_0+\theta_1}{\theta_0-\theta_1}\right)$

$\mathrm{m}\left(\frac{\theta_0-\theta_1}{\theta_0+\theta_1}\right)$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution