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MHT CET Physics question

PhysicsOscillationsMHT CET

A weightless spring of length 60 cm and force constant 200 N/m is kept straight and unstretched on a smooth horizontal table and its ends and rigidly fixed. A mass of 0.25 kg is attached at the middle of the spring and is slightly displaced along the length. The time period of the oscillation of the mass is

Answer: (A)

Solution

Each half of the spring has constant N/m and the two halves act together on the mass, so N/m and

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Question ID VK-068202