Can someone walk me through this practice problem.  What is the normal force exerted on the board from support 2? and What is the normal force exerted on the board from support 1? My answer should be expressed in terms of M, m, and L

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Q: 800 Dimensions in mm 800 N 600 424 N 408 N 900 560- 180–|

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!