[Solved] In the gure, the rock weighs 230 lb and i

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In the gure, the rock weighs 230 lb and is lifted 1 ft by the lever. (a) How much work is done? (b) The other

In the gure, the rock weighs 230 lb and is lifted 1 ft by the lever. (a) How much work is done? (b) The other end of the lever is pushed down 3 ft while lifting the rock. What force had to act on that end? Em

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