Friction which will keep the ladder from slipping

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A ladder weighs 150N, is 5 meters long, and is leaning against a frictionless wall at an angle of 30 degress with the horizontal. A person who weighs 300N is 2/3 the way up the ladder. The ground has an unknown coefficient of friction. What is the minimum coeficcient of static friction which will keep the ladder from slipping?

Reference no: EM13655796

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