If the load was 10 lbs., and the distance from the fulcrum was 10 inches (the lever arm), the force on the fulcrum would be 100 lbs. (10 X 10). In order to remain balanced, the effort on the opposite side of the fulcrum would have to also be 100 lbs. The effective load applied to the fulcrum would be 200 lbs. Thus an actual load of 10 lbs. would have an effective load on the fulcrum of 200 lbs.
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