Скачать или смотреть The figure below shows two men holding a signboard. How much minimum force should the two men apply…

The figure below shows two men holding a signboard. How much minimum force should the two men apply to hold the signboard stationary? Next, assume that the board begins to slip downward as one man lets go of the board. What is the acceleration of the board immediately after? Assume μ = 0.4 and μ = 0.3, and the mass of the board is 2 kg. The men are applying pressure normal to the board.

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