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AP EAMCET202421 May 2024Morning ShiftPhysicsRotational MotionActual

A solid sphere of mass 50 kg and radius 20 cm is rotating about its diameter with an angular velocity of 420 rpm . The angular momentum of the sphere is

Options

  1. A8.8 Js
  2. B70.4 Js
  3. C17.6 Js
  4. D35.2 Js

Correct answer

D. 35.2 Js

Step-by-step solution

m =50 ~kg , v =20 ~cm =0.2 ~m =420 rpm = 2 420 60 rad / s =14 rad / s The angular momentum of solid sphere, L = I . = 1 5 mr ^2 = 2 5 50 0.2 0.2 14 =35.2 Js

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