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Rotational Dynamics: Two problems with rod and pulley.

Please help with these two problems. I am having a hard time with them. Thanks.

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Solution Summary

1. A rod is pinned at one end and is swinging in a vertical plane. The reaction force at the pin is calculated
2. Two blocks attached by a string which passes through cylindrical pulley with mass(Atwood's machine). Related quantities are calculated in four parts.

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