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29 August, 09:48

A man of mass 60kg climbs up a 20m long staircase to the top of building 10m high. What is the work done by him

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Answers (2)
  1. 29 August, 10:29
    0
    mass=60kg

    h=20m

    g=10m/s²

    here the work done by the body is equal to its potential energy

    work done=P. E.

    As we know that P. E.=mgh

    putting values

    P. E.=60kg*20m*10m/s²

    P. E.=1200kgm*10m/s²

    P. E.=12000Nm

    so the work done by the body is 12000Nm
  2. 29 August, 11:03
    0
    Work done by hi

    should be 12000Nm i'm pretty sure
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