Posted by **Austin** on Sunday, October 16, 2011 at 6:19pm.

A ladder, mass 40 kg, 5 m long, is leaning against a vertical frictionless wall at

an angle of 50egrees to the vertical. It is about to slip. What is the coefficient of friction on

the floor?

A man mass,80 kg,starts to climb up the ladder at 500. Measuring along the ladder

how far up can he go without the ladder collapsing? At what angle should he have placed

the ladder so that he could have climbed to the top before the ladder began to slide?

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