JEE Main20206 Sep 2020Morning ShiftPhysicsOscillationsActual
An object of mass m is suspended at the end of a massless wire of length L and area of cross-section, A. Young modulus of the material of the wire is Y . If the mass is pulled down slightly its frequency of oscillation along the vertical direction is :
Options
- Af = 1 2 π m L Y A
- Bf = 1 2 π Y A m L
- Cf = 1 2 π m A V L
- Df = 1 2 π Y L m A
Correct answer
B. f = 1 2 π Y A m L
Step-by-step solution
f = 1 2 π k m = 1 2 π Y A m L f = 1 2 π Y A m L