A rod of mass 'M' and length '2L' is suspended at its middle by a wire
PHYSICS · Single correct · A Level · Physics · Engineering physics · Engineering physics
Problem
A rod of mass 'M' and length '2L' is suspended at its middle by a wire. It exhibits torsional oscillations; If two masses each of 'm' are attached at distance 'L/2' from its centre on
both sides, it reduces the oscillation frequency by 20%. The value of ratio m/M is close to :
(1) 0.77
(2) 0.57
(3) 0.37
(4) 0.17