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Rotational Motion

JEE Main level, single correct, medium

184 of 280

Question 184 of 280

A body of mass ' $m$ ' is tied to one end of a spring and whirled round in a horizontal plane with a constant angular velocity. The elongation in the spring is $1 \mathrm{~cm}$ . If the angular velocity is doubled, the elongation in the spring is $5 \mathrm{~cm}$ . The original length of the spring is :

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Answer: (A) $15 \mathrm{~cm}$

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JEE Main question paper PDF

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JEE Main 2025 Apr 2 Shift 1 question paper

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See it move: Rotational dynamics and rolling simulationDrag the sliders and watch the numbers in this question change.Revise Rotational Motion firstFormula sheet, solved examples and the traps students fall into.

More Physics practice

JEE Main Physics practice question on Rotational Motion (Rotational kinematics), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.