# Determine the horizontal component of the pressure with which the inclined plane D acts on the floor rib E.

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A body A weighing P1 descends down an inclined plane D which makes an angle $\alpha$ with the horizontal and pulls a load B that weighs P2 by means of a weightless and inextensible string passing over a pulley C as shown in Figure. Determine the horizontal component of the pressure with which the inclined plane D acts on the floor rib E.

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Tension in string is