3. You are at La Ronde to experience their latest attraction. The ride starts from rest, and reaches a certain rotation speed (w in revs per minute) before the floor drops out from under your feet. Find this certain rotation speed if the coefficient of friction between your back and the wall is 0.15. 3. You are at La Ronde to experience their latest attraction. The ride starts from rest, and reaches a certain rotation speed (w in revs per minute) before the floor drops out from under your feet. Find this certain rotation speed if the coefficient of friction between your back and the wall is 0.15