Determine the drum rotation rate


A ship's anchor weighs 5000 N. Its cable passes over a roller of negligible mass and is wound around a hollow cylindrical drum of mass 380 kg and radius 1.1 m. The drum is mounted on a frictionless axle. The anchor is released and drops 16 m to the water.

Use energy considerations to determine the drum's rotation rate when the anchor hits the water. Neglect the mass of the cable.

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Physics: Determine the drum rotation rate
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