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MHT CET 2023 Physics question

PhysicsWork, Energy and PowerMHT CET 2023

A ball of mass 'm' is dropped from a height 's' on a horizontal platform fixed at the top of vertical spring. The platform is depressed by a distance 'h'. the spring constant is (g = acceleration due to gravity)

Answer: (B)

Solution

Take the ball to be at rest momentarily when the platform is maximally depressed. The ball falls a total distance (height above the platform plus the depression ), losing gravitational potential energy . This is stored as elastic potential energy in the spring: . By

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Question ID VK-095135