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March 29, 2017

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A turntable with a moment of inertia of 0.017 kg*m^2 rotates feely at 3.3 rad/s. A circular disk of mass 240 g and diameter 26 cm, and initially not rotating, slips down a spindle and lands on the turntable.

  • Physics - ,

    Angular momentum is conserved.
    I1*w1 = (I1 + I2)w2

    I1 = 0.017 kgm^2
    I2 = (1/2)M2*R^2
    w1 = 3.3 rad/s
    R = 0.13 m

    Solve for w2.

    By the way, what was your question?

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