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In a popular amusement park ride, a rotating cylinder of radius 3.0 m is set in rotation at an angular speed of 0.80 revolutions per second. The floor then drops away, leaving the riders suspended against the wall in a vertical position.
(a) What minimum coefficient of friction between a rider’s clothing and the wall is needed to keep the rider from slipping?
(b) Be sure the coefficient of friction makes sense… compare the coefficient of friction you derive to one that might be typical for amusement park riders against a wall.

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