30. Problem 19.17 (Fey) A yo-yo like spool consists of two uniform disks, each of mass
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Solution: Click For PDF Version Moment of inertia of each disk is
Axle of the Yo-yo disks rolls down on release without sliding. Therefore,
there are two types of accelerations of the yo-yo, the translational
acceleration of the centre of mass,
From the free-body diagram we note that the net force acting vertically
downwards is
and
Also,
By eliminating
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