One end of a massless spring|CIRCULAR MOTION|JEE-Main 2022

JEE MIAN 2022

27-06-2022 S2

Question

One end of a massless spring of spring constant k and natural length $\mathrm{I}_0$ is fixed while the other end is connected to a small object of mass m lying on a frictionless table. The spring remains horizontal on the table. If the object is made to rotate at an angular velocity $\omega$ about an axis passing through fixed end, then the elongation of the spring will be:

Select the correct option:

$\frac{k-m \omega^2 l_0}{m \omega^2}$

$\frac{m \omega^2 I_0}{k+m \omega^2}$

$\frac{m \omega^2 I_0}{k-m \omega^2}$

$\frac{k+m \omega^2 l_0}{m \omega^2}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution