Your family is moving. While lifting a box 1.5m upward to put it on a truck, you exert a force of 200N. How much work do you do?

Question

Your family is moving. While lifting a box 1.5m upward to put it on a truck, you exert a force of 200N. How much work do you do?

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Amity 2 weeks 2021-07-21T20:57:14+00:00 1 Answers 2 views 0

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    0
    2021-07-21T20:58:48+00:00

    Recall that power is the amount of work done per unit time,
    P
    =
    W
    t
    When you’re lifting a box, you’re working against gravity. If you displace a box
    1.5
    m
    in the positive direction, you’re doing,
    W
    =
    200
    N

    1.5
    m

    cos
    (
    0
    °
    )

    300
    J
    of work in one second.
    Hence, the power required to execute this lift is approximately,
    300
    J
    1.0
    s

    300
    W

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