The rock weighs 100-lb and is lifted 1ft by the lever the
The rock weighs 100-lb and is lifted 1ft by thelever.
(a) How much work is done?
(b) The other end of the lever is pushed down 3ft whilelifting the rock. What force had to act on that end?
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the rock weighs 100-lb and is lifted 1ft by thelevera how much work is doneb the other end of the lever is pushed down
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