Uniform Circular Motion on a race track

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SUMMARY

The discussion focuses on calculating the smallest and largest speeds of cars on a banked race track with a radius ranging from 116 m to 153 m and an outer wall height of 11.6 m. To solve the problem, participants emphasize the importance of understanding the physics of forces acting on the cars, particularly the role of gravitational force and centripetal force. A free-body diagram is recommended to visualize these forces and derive the necessary equations for speed calculations without friction. The key takeaway is that the height of the outer wall influences the angle of banking, which directly affects the maximum speed achievable on the track.

PREREQUISITES
  • Understanding of centripetal force and gravitational force
  • Knowledge of free-body diagrams in physics
  • Familiarity with the equations of motion for circular paths
  • Concept of banking angles in physics
NEXT STEPS
  • Study the derivation of the banking angle formula for circular motion
  • Learn how to apply Newton's laws to circular motion problems
  • Research the effects of friction on banked curves in racing scenarios
  • Explore the relationship between radius, speed, and banking angle in circular motion
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and circular motion, as well as educators seeking to explain the principles of banked tracks in racing contexts.

Physicsnoob90
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Homework Statement


On a banked race track, the smallest circular path on which cars can move has a radius of 116 m, while the largest has a radius of 153 m, as the drawing illustrates. The height of the outer wall is 11.6 m. Find (a) the smallest and (b) the largest speed at which cars can move on this track without relying on friction.

Homework Equations

The Attempt at a Solution


I'm stuck on what type of equation to use since i don't know what to do with the given height? What am i supposed to treat it as? Can anyone help me out?
 
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Before looking for equations - try thinking about the physics.

What effect does the height have on the track?
Where, on the track, will the cars be able to travel at the fastest speed (all else remaining equal)?

Start out by drawing a free-body diagram ... what are the forces? Where do they point? Where should the resultant force point?

Once you've done that - some equations should suggest themselves.
 

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