Question #98366
Pooja spins a ball of mass 'm: attached to a spring length ' r ' around her head with velocity Vi.If the ball spirits in half of its mass instantaneously,what is it's new velocity Vf ?
1
Expert's answer
2019-11-11T15:56:59-0500

From the conservation of angular momentum:


0.5mVfr=mVir0.5mV_fr=mV_ir

Vf=2ViV_f=2V_i


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