Question

a solid sphere of mass 20 kg and radius 0.25m rotates about an axis passing through the center. what is the angular momentum if the angular velocity is 5 rad/s?
plzzz answer it....

Answer 1

Angular Momentum = Angular Velocity * Moment of Inertia

Moment of Inertia of Solid Sphere  = 2/5 * mass * radius ^2

= 2/5(20 * 0.25*0.25)

=0.5 kgm2

Therefore Angular Momentum = Angular Velocity * Moment of Inertia

= 5 * 0.5

=2.5

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