physics

A uniform ladder AB leans against a smooth vertical wall at an angle 60degree to the horizontal.the weight of the ladder is 200N. By taking moments about a suitable point,calculate the reaction at the wall

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  1. Take moments about foot of ladder of length L

    200 (L/2) sin 30 = F L sin 60

    50 = F sin 60
    F = 57.7 N

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    posted by Damon

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