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MHT CET Physics question

PhysicsOscillationsMHT CET

A plank with a small block on top of it is undergoing SHM in vertical direction of period 2 s. The minimum amplitude at which block will separate from the plank is:

Answer: (A)

Solution

The block leaves when the plank's downward acceleration reaches at the top: , with , so

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Question ID VK-068177