A block 1of weight w1 rests on a horizontal surface and supports on the top of it a block 2of weight w2. the block 2is attached to a vertical wall by the inclined string ab as shown in fig. 1. find the magnitude of the horizontal force p, applied to the lower block 1, which will be necessary to cause slipping to impend. the coefficient of static friction for all contiguous surface is µ = 0.3.
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just use force balancing for friction and weight and then solve
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