Winding a chain A 30-m-long chain hangs vertically from a cylinder attached to a winch. Assume there is no friction in the system and the ch

Question

Winding a chain A 30-m-long chain hangs vertically from a cylinder attached to a winch. Assume there is no friction in the system and the chain has a density of 5 kg/m. How much work is required to wind the entire chain onto the cylinder using the winch

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Edana Edana 5 years 2021-07-18T22:24:10+00:00 1 Answers 39 views 0

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  1. thienhuong
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    2021-07-18T22:25:22+00:00
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    Answer:

    Explanation:

    Assuming that velocities remain negligible,

    The work will be equal to the change in potential energy of the center of mass

    mass is 30 m(5 kg/m) = 150 kg

    W = 150(9.8)(30/2) = 22,050 J ≈ 22 kJ

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