Question

A metal ball (mass m) with a hole through it is threaded on a frictionless vertical rod

Answer 1

Answer:

I guess your question is incomplete.

Answer 2

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metal ball (mass m) with a hole through it is threaded on a frictionless vertical rod. A massless string (length l) attached to the ball runs over a massless, frictionless pulley and supports a block of mass M, as show in the figure. The postions of the two masses can be specified by the one angle q.

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