(a) A yo-yo is made of two solid cylindrical

Chapter 10, Problem 10.85

(choose chapter or problem)

(a) A yo-yo is made of two solid cylindrical disks, each ofmass 0.050 kg and diameter 0.075 m, joined by a (concentric)thin solid cylindrical hub of mass 0.0050 kg and diameter0.010 m. Use conservation of energy to calculate the linearspeed of the yo-yo just before it reaches the end of its1.0-m-long string, if it is released from rest, (b) What fractionof its kinetic energy is rotational?

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