Non uniform circular motion and friction

[newcool]

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

Centripital 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

[HallsofIvy]

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?

[newcool]

I thought that was the static friction.

[Tide]

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.

[newcool]

So There is friction perpendicular to the centripital force and friction parallel to centripital force. How are the 2 related?

[Tide]

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?

[Tide]

Is the acceleration uniform and are you given some rate of acceleration?

[newcool]

No information about acceleration is given. Teacher said that when you draw the right FBD it will become very simple

[newcool]

bump. Any help appreciated. Thanks

[Tide]

Sorry - just got back. I have to think some more about that. I think something is missing.