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.
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There is no question here.
W=mgh =mgL(1-cosĪ)
2 answers