In a popular amusement-park ride, a cylinder of radius 2.76 m is set in rotation at an
angular speed of 5.89 rad/s, as shown in the
figure. The floor then drops away, leaving the
riders suspended against the wall in a vertical
position.
What minimum coefficient of friction between a rider’s clothing and the wall of the
cylinder is needed to keep the rider from
slipping? The acceleration due to gravity
is 9.81 m/s^2.