Posted by: fp14193 | September 17, 2015

Playing with pulleys

Today in science we had the opportunity to make fixed and movable pulleys.  We learned that a fixed pulley requires the same amount of force to move a load.  There is no mechanical advantage but it is easier to pull down because of gravity.  We also learned that a movable pulley can provide a mechanical advantage.  It took less force to lift the load.

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