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Homework Help: Moment of inertia and tension

  1. Jan 16, 2005 #1
    I am doing some reading on inertia and stuff and am having problems with these questions:

    An m = 11.9 kg mass is attached to a cord that is wrapped around a wheel of radius r = 12.3 cm

    The acceleration of the mass down the frictionless incline is measured to be a = 1.91 m/s2. Assuming the axle of the wheel to be frictionless, and the angle to be θ = 33.1°
    a)determine the tension in the rope.
    b)Determine the moment of inertia of the wheel.

    ok for a i did :
    T=cos angle *m*a but that doesn't give me the right answer..
  2. jcsd
  3. Jan 16, 2005 #2
    ok i got a
    i gues they wanted torque
  4. Jan 16, 2005 #3
    anyone know how to calcluate the moment of inertia from the information given
    Last edited: Jan 16, 2005
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