Question

A 0.2 kg of mass hangs at the end of a spring. When 0.02 kg more mass is added to the end of the spring, it stretches 7 cm more. If the 0.02 kg mass is removed, what will be the period of vibration of the system?

Answer 1

When 0.02 kg mass is added, the spring streches by 7 cm

As mg = kx

When 0.02 kg mass ia removed, the period of vibration will be