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If the coefficient of static friction is 0.60, and the same ladder makes a 46° angle...

If the coefficient of static friction is 0.60, and the same ladder makes a 46° angle with respect to the horizontal, how far along the length of the ladder can a 55.0-kg person climb before the ladder begins to slip? The ladder is 7.5 m in length and has a mass of 21 kg.

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