2007-10-03 15:20:17 · 3 answers · asked by Lim S 3 in Science & Mathematics ➔ Physics
Two pulleys decreases the Force you have to apply by 1/2 in order to lift the weight. However, you have to pull the cable twice as far to move the weight up the same height as with just one fixed pulley. A fixed pulley changes the direction of force, a fixed pulley and a movable pulley stretches the amount of work you have to do over twice the distance, thus making the weight twice as easy to lift.
2007-10-03 15:24:39 · answer #1 · answered by Anonymous · 0⤊ 0⤋
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2016-12-28 13:49:41 · answer #2 · answered by humphries 4 · 0⤊ 0⤋
It has a much lower force multiplication.
Doug
2007-10-03 15:38:39 · answer #3 · answered by doug_donaghue 7 · 0⤊ 0⤋