Answer to Question #310844 in Classical Mechanics for Santosh

Question #310844

A child of mass 30 kg slides from rest down a wooden pole by a distance of 3.0. calculate the average force of friction acting on the child if her speed is 2.0 when she hits the ground

Expert's answer

"\\frac{mv^2}2=Fl,"

"F=\\frac{mv^2}{2l}=20~N."

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