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A hiker, who weighs 855 N, is strolling through the woods and crosses a small horizontal...

A hiker, who weighs 855 N, is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs 4560 N, and rests on two concrete supports, one on each end. He stops 1/6 of the way along the bridge. What is the magnitude of the force that a concrete support exerts on the bridge (a) at the near end and (b) at the far end?

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