Determine the angular acceleration of the 25-kg diving board, and the horizontal and vertical components of reaction at the pin A, the instant the man dives off. Assume that the board is uniform and rigid, and that at the instant he dives off, the spring is compressed a maximum amount of 200 mm, ω = 0, and the board is horizontal. Take k = 7 kN/m.

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A 1.5 m- WM 1.5 m k