Angular Velocity and static friction

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Homework Statement


The coefficient of static friction between the person and the wall is .61. The radius of the cylinder is 6.56 m. An amusement park ride consists of a large vertical cylinder that spins about its axis fast enough that any person inside is held up against the wall when the loor drops away. What is the minimum angular velocity needed to keep the person from slipping downward?


Homework Equations





The Attempt at a Solution



I don't know how to solve this problem because of the coefficient of static friction. Please help
 

Answers and Replies

  • #2
arildno
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Well, ask yourself:
1. What force provides the person with her centripetal acceleration?
2. Relative to the wall, is this force a normal force, or a tangential force?
3. What is the force opposing her weight, and that must balance this in order for her not to slip downwards?
 

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