A boy exerts a force of 224 N on a lever to raise a 1250 N rock a distance of.13m. A.If the efficiency of the lever is 88.7%, how far did the.

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A boy exerts a force of 224 N on a lever to raise a 1250 N rock a distance of.13m. A.If the efficiency of the lever is 88.7%, how far did the boy move his end of the lever? B.If the lever is 3 m long, how far is the boy from the fulcrum?

A boy exerts a force of 224 N on a lever to raise a 1250 N rock a distance of.13m. A.If the efficiency of the lever is 88.7%, how far did the boy move his end of the lever?

A boy exerts a force of 224 N on a lever to raise a 1250 N rock a distance of.13m. B.If the lever is 3 m long, how far is the boy from the fulcrum?