Marie lifts a 5 kg mass from the floor and puts in on a table one metre high. What is the work done?

Question

Marie lifts a 5 kg mass from the floor and puts in on a table one metre high. What is the work done?

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Khánh Gia 5 years 2021-09-02T22:02:51+00:00 1 Answers 41 views 0

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  1. thaiduong
    0
    2021-09-02T22:04:32+00:00
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    Answer:

    The work done was 49.05 N*m.

    Explanation:

    The work done by a a force is given by:

    W = F*d

    We first need to calculate the force necessary to lift the box from the ground, the force needed for is the weigh of the box, which is shown below:

    F = m*g\\F = 5*9.81\\F = 49.05 \text{ N}

    Therefore the work done by lifting the box and placing it on the table is:

    W = 49.05*1 \\W = 49.05 \text{ N*m}

    The work done was 49.05 N*m.

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