JIPMER2006PhysicsOscillations
A pendulum is undergoing SHM with frequency f . What is the frequency of its kinetic energy ?
Options
- Af / 2
- B2 f
- C3 f
- D4 f
Correct answer
B. 2 f
Step-by-step solution
Let, x = A t v = dx dt = A t Kinetic energy, K = 1 2 mv ^2 aligned & K = 1 2 ~m ^2 ~A ^2 ^2 t & K = 1 2 ~m ^2 ~A ^2 ( 1+ 2 t 2 ) & K = 1 4 ~m ^2 ~A ^2 (1+ ^2 t ) & _ K =2 aligned Frequency of oscillation of K . E =2 f [ f = 2 ]