# Homework Help: Centripetal Force, and Car Drifting Question

1. Mar 6, 2015

### SherlockIsReal

deleted

Last edited: Mar 7, 2015
2. Mar 6, 2015

### Andrew Mason

Are there any forces other than friction keeping the car on the road?

What do all the forces along road surface sum to?

What is the acceleration of the car in terms of its speed and radius of its turn?

AM

3. Mar 6, 2015

### SherlockIsReal

Are you asking me what I think or are you verifying the question?

4. Mar 6, 2015

### Andrew Mason

I am just pointing out the questions you need to answer. You have to do the thinking.

AM

5. Mar 6, 2015

6. Mar 7, 2015

### SherlockIsReal

Would it be right to assume Force centripetal = Force kinetic friction, if the car were to achieve maximum speed? As for the second part, does it mean that the coefficient for kinetic friction has increased?

7. Mar 7, 2015

### haruspex

Yes, centripetal force will equal frictional force, but I wouldn't call it an assumption. You can deduce it from the usual equations of dynamics.
It's a bit strange that the question discusses kinetic friction in the first part. Since no width of road is specified, you have to assume it does not skid in this part, so it will be static friction.