MHT CET Physics question

PhysicsOscillationsMHT CET

A mass 'M' is suspended from a light spring. An additional mass 'm' added displaces the spring further by a distance 'x'. Now the combined mass will oscillate on the spring with period (g = acceleration due to gravity) [MHT-CET 2019]

Answer: (D)

Solution

The extra weight mg gives extension x so and

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Question ID VK-068544