March 30, 2017

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A bullet (m = 0.0290 kg) is fired with a speed of 94.00 m/s and hits a block (M = 2.70 kg) supported by two light strings as shown, stopping quickly. Find the height to which the block rises

  • physics - ,

    problem 1 is conservation of momentum
    m (v) + M(0) = (M+m)V

    problem 2 is conservation of energy
    Ke after collision = (1/2)(m+M)V^2
    which = (M+m)g h

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