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JEE PHYSICS MCQ: SYSTEM OF PARTICLES

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A ring of mass

0.3 \mathrm{~kg}

and radius

0.1 \mathrm{~m}

and a solid cylinder of mass

0.4 \mathrm{~kg}

and of the same radius are given the same KE and released simultaneously on a flat horizontal surface such that they begin to roll as soon as released towards a wall which is at the same distance from the ring and cylinder. Which will reach the wall first?

View answer and explanation

Correct option: C

Both ring and cylinder

Option C (Both ring and cylinder) is correct because both objects have the same kinetic energy and will reach the wall simultaneously.

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\omega = {t^4} + 2{t^3}

then its angular acceleration of the particle at

t = 1\,sec

\left( {rad\,{s^{ - 2}}} \right)