The 50-lb board is placed across the channel and a 100-lb girl attempts to walk across. If
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The 50-lb board is placed across the channel and a 100-lb girl attempts to walk across. If the coefficient of static friction at A and B is μs= 0.4, determine if she can make the crossing; and if not, how far will she get from A before the board slips?
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-10 ft- B
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