question archive 1) After a fall, a 50 kg rock climber finds herself dangling from the end of a rope that had been 20 m long and 5 mm in radius but has stretched 2 cm
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1) After a fall, a 50 kg rock climber finds herself dangling from the end of a rope that had been 20 m long and 5 mm in radius but has stretched 2 cm. What is the Young's modulus for the rope?
2) A 200 N ladder leans against a vertical, frictionless wall at an angle of 60 degrees with respect to the horizontal floor. A 400 N bucket is placed at the top of the ladder. What is the minimum value of the coefficient of static friction between the ground and the ladder for the ladder not to slip?