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3 February, 13:36

Assume your mass is 60 kg. The acceleration due to gravity is 9.8 m/s 2. How much work against gravity do you do when you climb a flight of stairs 2.9 m high? Answer in units of J.

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  1. 3 February, 14:19
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    W=1705.2 J

    Explanation:

    Given that

    mass, m = 60 kg

    Acceleration due to gravity, g = 9.8 m/s²

    Height, h = 2.9 m

    As we know that work done by a force given as

    W = F. d

    F=force

    d=Displacement

    W=work done by force

    Now by putting the values

    F = m g (Acting downward)

    d = h (Upward)

    W = m g h (work done against the force)

    W = 60 x 9.8 x 2.9 J

    W=1705.2 J

    Therefore the answer will be 1705.2 J.
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