A crane lifts a 425 kg steel beam vertically a distance of 64 m. How much work does the crane do on the beam if the beam accelerates upward

Question

A crane lifts a 425 kg steel beam vertically a distance of 64 m. How much work does the crane do on the beam if the beam accelerates upward at 1.8 m/s2

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Euphemia 3 years 2021-08-17T18:31:21+00:00 1 Answers 67 views 0

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  1. vankhanh
    0
    2021-08-17T18:32:52+00:00
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    Answer:

    work done= 48.96 kJ

    Explanation:

    Given data

    mass of  load m= 425 kg

    height/distance h=64 m

    acceleration a= 1.8 m/s^2

    The work done can be calculated using the expression

    work done= force* distance

    but force= mass *acceleration

    hence work done= 425*1.8*64= 48,960 J

    work done= 48.96 kJ

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