# Wheels, car and friction concepts

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1. Apr 30, 2015

### **Mariam**

Hello, I am a high school student and I am studying about rotational motion this term. However, I am having a bit of trouble understanding some concepts about this idea; specifically about cars and turns.

First of all before talking about cars turning corners and the forces there, I don't even think I understand how a car moves. I know that it uses friction, but the idea is unclear. Is it related to newton's third law, the car pushes on the road and the road pushes back, but where does friction come in play here?

The second part of my question is related to cars when the turn around a curve. I've had a couple of problem solving about these types of questions and I was able to solve them because they are simply about finding the unknowns and using kinematics equations and newton's 2nd law. However, I don't understand again how friction plays a part in this. We took in class that centripetal force isn't actually a force, so other forces cause it. Like normal, gravity, friction... In the case of the car it is friction, but why and how?

I've been searching for this for over a week now and although I found many detailed answers nothing really made me understand it yet :( , and I feel i am wont understand the lesson unless I can understand this part.
So thanks alot for anyone who will take the time to explain this puzzling dilemma to me. :)

2. Apr 30, 2015

### A.T.

The pushing is via friction

There are many threads on this. Search for "friction turning car" or similar.

3. May 4, 2015