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Math Help - General Physics

  1. #1
    Junior Member
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    General Physics

    Two masses are connected by a string which goes over an ideal pulley as shown in the figure below. Block A has a mass of 3.00 kg and can slide along a rough plane inclined 30.0 to the horizontal. The coefficient of kinetic friction between block A and the plane is 0.400. Block B has a mass of 2.77 kg. What is the tension in the string? [g=9.8ms-2]
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  2. #2
    Senior Member
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    This is a standard problem.

    Write 2 equations. One for block A and one for block B.
    Essentially the block B eqn is:
    mg - T = ma

    The block A one is a a little more involved:
    T - mg sin \theta - \mu * normal force = ma<br /> <br />
    The T is the same in both equations, and is your tension.
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