Posted by **Miguel** on Friday, February 25, 2011 at 1:13pm.

In a pulley sytem with 100% effieciency with ten support cables. The input side reels 100 meters of cable. How far dis the output move?

What is the value of the output force?

In identical conditions at 70% efficiency, the cable does not stretch. How much input force is needed to perform same output work?

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