A spherical shell of 1   kg mass and radius R is rolling with angular speed ω on horizontal plane…

A spherical shell of 1 kg mass and radius R is rolling with angular speed ω on horizontal plane (as shown in figure). The magnitude of angular momentum of the shell about the origin O is a3R2ω. The value of a will be

 

  1. 2
  2. 3
  3. 5
  4. 4

Solution

Angular momentum of a rotating and translating body is given by,

LO=mvR+Iω=mvR+23MR2ω

For rolling, v=ωR

  LO=mωR21+23=53mωR2

Therefore, the value of a=5.

Asked in: JEE Main 2022 (29 Jun Shift 1)

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