Q. A bucket full of water is revolved in vertical circle of radius $2m$. What should be the maximum time-period of revolution so that the water doesn’t fall of the bucket
A) $1\ sec$
B) $2\ sec$
C) $3\ sec$
D) $4\ sec$
Explanation
(c) Minimum angular velocity $\omega_{\min} = \sqrt{g/R}$
$\therefore T_{\max} = \frac{2\pi}{\omega_{\min}} = 2\pi\sqrt{\frac{R}{g}} = 2\pi\sqrt{\frac{2}{10}} \cong 3s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.