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MHT CET202313 May 2023Morning ShiftPhysicsRotational MotionActual

The rotational kinetic energy and translational kinetic energy of a rolling body are same, the body is

Options

  1. Adisc
  2. Bsphere
  3. Ccylinder
  4. Dring

Correct answer

D. ring

Step-by-step solution

Translational kinetic energy of a ring is: KE _ Trans = 1 2 mv ^2 Rotational kinetic energy of the ring is: aligned KE _ Rolling & = 1 2 I ^2 & = 1 2 mR ^2 ^2 KE _ Rolling & = 1 2 mv ^2 ( v = R ) aligned

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