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MHT CET Physics question

PhysicsWavesMHT CET

A rope of mass M and length L is being rotated about one end in a gravity free space. A pulse is being created at one of the ends. The angle through which rope will be rotated in the time when pulse reaches the opposite end of rope for first time and for the angular velocity of rope , is

Answer: (A)

Solution

At distance from the axis the tension is , so the pulse speed is ; then $=Missing argument for \dfrac\dfrac{ω

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Question ID VK-070208