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MHT CET Physics question

PhysicsLaws of MotionMHT CET

A body of mass 'm' is tied to one end of a spring and whirled round in a horizontal circle with a constant angular velocity. The elongation in the spring is 1 cm. If the angular velocity is doubled, the elongation in the spring is 5 cm. The original length of the spring is [MHT-CET 2021]

Answer: (D)

Solution

and ; dividing, gives

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Question ID VK-039586