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A board has length of 3 meters, and it rests horizontally on two supports. Support 1...

A board has length of 3 meters, and it rests horizontally on two supports. Support 1 is 0.39 meters from the left end of the board and support 2 is 0.21 meters from the right end of the board. The normal force from support 2 is 18 Newtons. What is the normal force from support 1 in Newtons?

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