# Uniform Circular Motion of coffee cup

1. Aug 5, 2015

### buonastella

1. The problem statement, all variables and given/known data
1. Kim has her coffee cup on her car's dash when she takes a corner with radius 4 m and 20 km/h. What is the minimum coefficient of static friction which would allow the coffee cup to stay there without slipping?

2. Relevant equations
Can someone show me the steps in how they answered it

3. The attempt at a solution
I know I have to use Fc = mv^2/R but I just honestly have no idea what I'm doing

2. Aug 5, 2015

### Titan97

For the cup, which force provides centripetal acceleration?

3. Aug 5, 2015

### DEvens

Do you know what a static coefficient of friction is? If not, you need to do some reading.

https://en.wikipedia.org/wiki/Friction

You need to show some level of effort before people will help you. Asking for somebody to "show me the steps" will not get you a happy glowing response. If you are stuck on a particular part please come back and ask.