[填空题]
In a "Rotor-ride" at a carnival, people are rotated in a cy6 ,x 4 iajzi7eo65bypelindrically walled znu 9n/cd *9tqmg2 4bs"roonnzq2b cst4 m */9du9gm." (See Fig. 5-35.)
The room radius is 4.6 m , and the rotation frequency is 0.50 revolutions per second when the floor drops out. What is the minimum coefficient of static friction so that the people will not slip down? People on this ride say they were "pressed against the wall." Is there really an outward force pressing them against the wall? If so, what is its source? If not, what is the proper description of their situation (besides "scary")? [Hint: First draw the free-body diagram for a person.]
