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    mctrotter's Avatar
    mctrotter Posts: 1, Reputation: 1
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    #1

    Mar 7, 2010, 02:21 PM
    Workiers are pulling a 275 kg piano up a building. At lunchtime they tie the rope to
    Workers are pulling a 275 kg piano up a building. At lunch time they tie the rope to a 260kg desk. Unfortunately, the desk begins to slide. If the coefficient of the kinetic friction is 0.71, what is the piano's acceleration?
    InfoJunkie4Life's Avatar
    InfoJunkie4Life Posts: 1,409, Reputation: 81
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    #2

    Mar 7, 2010, 05:01 PM

    Do you have a diagram? This involves vector forces, you need to know which direction each force is pulling.

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