Suppose a person wishes to lift a large rock with a lever. If the rock has a mass of 250kg and is located 50 cm from the pivot, and the person can put a force of 650N straight down on her end of the lever, what is the minimum distance from the fulcrum she has to be to lift the rock? A. 0.63 m B. 1.24 m C. 1.88 m D. 2.73 m

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