engineering recuitment ISRO Technical Assistant 2024 Mock Test Mechanical Vibrations Undamped Free Vibration Torsional Vibration
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 of both sides, it reduces the oscillation frequency by 10%. The value of the ratio M/m is close to :
1
6.4
2
7.7
3
3.7
4
None of these