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A 74.0 kg firefighter climbs a flight of stairs 12.0 m high. How much work is required?

  • Physics -

    W = Mg

    M = 74 kg
    g = 9.8 m/s^2

  • Physics -

    W=Force x displacement x cos of the angle.
    W=(mg)(d)(cos angle)
    W=(74 x 9.8)(12)(cos 0)
    W=8702.4 J

  • Physics -

    Ok, i was thinking the similar way but i got confused because there was no time given neither speed.

  • east high school of carlifoniaics -


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