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Posted by on Tuesday, May 22, 2012 at 1:07am.

small mass hangs at rest from a vertical rope of length that is fixed to the ceiling. A force then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle and the mass has been raised by a vertical distance . Assume the force's magnitude is adjusted so that the mass moves at constant speed along its curved trajectory.

  • physics - , Tuesday, May 22, 2012 at 2:28am

    There is no question here.

  • physics - , Tuesday, May 22, 2012 at 4:53am

    W=mgh =mgL(1-cosφ)

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