Question

4. A massless rope is wrapped around a uniform solid
cylinder that has radius of 30 cm and mass 10 kg, as

shown in the figure. The cylinder begins to unwind when it is
released and allowed to rotate.

(a) What is the acceleration of the center of mass of the
cylinder?

(b) If 90 cm of rope is unwound from the cylinder as it falls, how
fast is it rotating at this instant?

Answer #1

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