12. Draw a labelled diagram of an arrangement of two
pulleys, one fixed and other movable. In the
diagram, mark the directions of all forces acting on
it. What is the ideal mechanical advantage of the
system? How can it
be achieved ?
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Explanation:
Ideal mechanical advantage of this system is 2. This can be achieved by assuming that string and the pulley are mass-less and there is no friction in the pulley bearings or at the axle or between the string and surface of the rim of the pulley.
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