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26 July, 13:50

Children in a tree house lift a small dog in a basket 4.00 m up to their house. If it takes 187 J of work to do this, what is the combined mass of the dog and basket?

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  1. 26 July, 14:10
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    A=Fh

    A - work

    F - force

    h - distance

    F=mg

    m - mass (god+basket)

    so

    A=mgh

    187 = m*10*4

    187=40m

    m=187/40

    m=4.675 kg

    or 4kg and 675g

    pretty small dog ...
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