JEE Main & Advanced
Physics
Simple Harmonic Motion
Question Bank
Simple Pendulum
question_answer
The time period of a second's pendulum is 2 sec. The spherical bob which is empty from inside has a mass of 50 gm. This is now replaced by another solid bob of same radius but having different mass of 100 gm. The new time period will be [NCERT 1972]
A) 4 sec
B) 1 sec
C) 2 sec
D) 8 sec
Correct Answer:
C
Solution :
\[T=2\pi \sqrt{\frac{l}{g}}\] (Independent of mass)