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A disk of mass M is spinning freely at 4.67 rad/s when a second identical disk,...

A disk of mass M is spinning freely at 4.67 rad/s when a second identical disk, initially not spinning, is dropped onto it so that their axes coincide. In a short time the two disks are corotating.

(a) What is the angular speed of the new system (in rad/s)? rad/s

(b) If a third such disk is dropped on the first two, find the final angular speed of the system (in rad/s). rad/s

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Answer #1

final answer - (a) = 2.335 rsd / s

(b) = 1.5567 rad /s

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