Angular Velocity and static friction

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SUMMARY

The minimum angular velocity required to prevent a person from slipping down a vertical cylinder with a radius of 6.56 m and a coefficient of static friction of 0.61 is determined by analyzing the forces acting on the person. The centripetal force necessary for circular motion is provided by the normal force exerted by the wall, which must counteract the gravitational force acting on the person. The relationship between these forces leads to the calculation of the angular velocity needed to maintain the person against the wall without slipping.

PREREQUISITES
  • Understanding of centripetal acceleration and forces
  • Knowledge of static friction and its coefficient
  • Familiarity with Newton's laws of motion
  • Basic algebra for solving equations
NEXT STEPS
  • Calculate the angular velocity using the formula: ω = √(g / r * μ)
  • Explore the relationship between normal force and centripetal force in circular motion
  • Study the effects of varying the radius and coefficient of friction on angular velocity
  • Investigate real-world applications of centripetal force in amusement park rides
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and forces, as well as engineers and designers involved in amusement park ride safety and design.

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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
 
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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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