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Finding acceleration of a pulley using forces?

  1. Dec 2, 2007 #1
    1. The problem statement, all variables and given/known data
    alright here is the problem: a ramp that is 45 degrees angle has a block on it with mass 10 kg. then at the top of the inclined plane/ramp, there is a pulley with another block hanging down it. the mass of the hanging block is 100 kg. the mass of the pulley itself is 50kg. the radius of the pulley is 1meter. this is all i know.
    i have to find the acceleration of the blocks.

    2. Relevant equations

    here are are some helpful equations: Torque=radius x Force x sin(theta)

    Torque = Inertia of the pulley x angular acceleration.

    inertia of the pulley = .5 x Mass of the pulley x radius^2

    3. The attempt at a solution

    the basic formula i am using is that R x T1 + R x T2 sin(theta) =Inertia x angular acceleration. i do not know if i am heading in the right direction.
  2. jcsd
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