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Three children are trying to balance on a seesaw, which consists of a fulcrum rock, acting as a pivot at the center, and a very light board 3.6 m long. two playmates are already on either end. boy a has a mass of 40 kg, and girl b a mass of 30 kg. where should girl c, whose mass is 20 kg, place herself so as to balance the seesaw?
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Three children are trying to balance on a seesaw, which consists of a fulcrum rock, acting as a pivo...
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