Non uniform circular motion and friction

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Homework Help Overview

The discussion revolves around the forces acting on a car that is accelerating in a circular motion, specifically focusing on the role of friction in this context.

Discussion Character

  • Conceptual clarification, Assumption checking, Exploratory

Approaches and Questions Raised

  • Participants explore the types of friction involved, questioning the relationship between static friction and centripetal force. There are inquiries about additional components of friction and how they interact with the forces acting on the car.

Discussion Status

The conversation is ongoing, with participants offering insights about the forces at play and the need for a free body diagram (FBD) to clarify the situation. Some participants are considering the implications of the lack of specific information regarding acceleration.

Contextual Notes

There is an absence of information about the rate of acceleration, and the original poster mentions guidance from a teacher regarding the simplification of the problem through proper diagramming.

newcool
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What are the Forces of a car that is accelerating around a circle? There is friction between the road and the car.

centripetal force(in towards the circle)
Static Friction(in towards the circle)

However there is also another component of friction that I am missing?
Any ideas?

Thanks
 
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If the car is going around in a circle, its tires are aimed tangent to the circle, not in or out. Isn't there friction between the tires and the road that is accelerating it?
 
I thought that was the static friction.
 
newcool said:
I thought that was the static friction.

Halls didn't claim otherwise. He's telling you that the car is accelerating and suggesting to you what the accelerating force is.
 
So There is friction perpendicular to the centripetal force and friction parallel to centripetal force. How are the 2 related?
 
Friction provides the centripetal force. Otherwise, the car would travel off in a straight line. Your original question is sufficiently broad that you will have to include the force provided by the engine which acts through torque on the wheels and friction with the road.

Do you have a specific problem in mind?
 
Is the acceleration uniform and are you given some rate of acceleration?
 
No information about acceleration is given. Teacher said that when you draw the right FBD it will become very simple
 
bump. Any help appreciated. Thanks
 
  • #10
Sorry - just got back. I have to think some more about that. I think something is missing.
 

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