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23 August, 23:31

A 50 meter chain with uniform density and a mass of 40 kilograms is hanging from the roof of a building under construction. How much work (in Nm) is required to pull the chain up?

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Answers (2)
  1. 24 August, 01:35
    0
    W = 19600 N m

    Step-by-step explanation:

    W = force * distance

    The force is the weight times gravity since it is hanging down

    W = 40 kg * 9.8 m/s^2 * 50m

    19600 kg m^2/s^2

    A newton is kg m / s^2

    W = 19600 N m
  2. 24 August, 02:19
    0
    19,600 Nm

    Step-by-step explanation:

    WD = mgh

    = 40 * 9.8 * 50

    = 19600 Nm
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