Asked by shaun
A 30-kg uniform ladder 12 m long is leaning against a frictionless wall at an angle of 50 degrees above the horizontal. A 45-kg boy climbs 5.0 m up the ladder. What is the magnitude of the force exerted by the ladder on the wall?
Answers
Answered by
Elena
http://answers.yahoo.com/question/index?qid=20091116155804AA13w8n
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