Circular Motion: Solving for Banked Angle on a 122m Highway Curve

umeks17
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Homework Statement


a highway curve has a radius of 122m. At what angle should the road be banked so that a car travellin at 26.8m/s (60mph) has no tendency to skid sideways on the road? (frictional force is zero)


Homework Equations





The Attempt at a Solution

 
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Did you have a go at it?

Sam :smile:
 
no...can you help me to solve that question..
argh...my head wants to explode...
 
To start of you want to draw the setup as a force diagram at an arbitrary angle (called \theta say), with:
- The normal reaction
- The centrifugal force from acceleration in a circle
- The Weight of the car

You need to find the angle at which all these forces are balanced. Does this help?

Sam
 
i will try it tonight :smile:
 
thanks a lot...a got it..:) huh
 

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