A long uniform board weighs 549 n 110 lbs rests on a


A long uniform board weighs 54.9 N (11.0 lbs) rests on a support at its mid point. Two children weighing 419.0 N (83.8 lbs) and 209.0 N (41.8 lbs) stand on the board so that the board is balanced. What is the upward force exerted on the board by the support?

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Physics: A long uniform board weighs 549 n 110 lbs rests on a
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