6. Four people are trying to help push and lift a refrigerator up a series of stairs. Jim pushes with a force of 60 N. Aaron lifts wit

Question

6. Four people are trying to help push and lift a refrigerator up a series of stairs. Jim pushes
with a force of 60 N. Aaron lifts with a force of 200 N. Reginald pushes with a force of 210 N,
and Archer lifts with a force of 95 N.

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Vân Khánh 4 years 2021-08-15T11:32:20+00:00 1 Answers 16 views 0

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  1. lethu
    0
    2021-08-15T11:34:17+00:00
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    Answer:

    Net force due to all on the refrigerator is 400 N

    Explanation:

    As we know that two people are pushing the refrigerator while other two people are lifting the refrigerator

    So net push force on the refrigerator is given as

    F = F_1 + F_2

    F = 60 + 210

    F_1 = 270 N

    Similarly net lift force on the refrigerator is given as

    F = F_1' + F_2'

    F = 200 + 95

    F_2 = 295 N

    Now net force on the refrigerator is given as

    F_{net} =\sqrt{F_1^2 + F_2^2}

    F_{net} = \sqrt{270^2 + 295^2}

    F_{net} = 400 N

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