# Uniform circular motion

1. Sep 8, 2004

### Neil

A question on circular motion i wasn't able to figure without knowing the mass of the body. Can anbody post the ans + procedure. Thanx

A car travels over a humpback bridge of radius of curvature 45m. Calculate the max. speed of the car if it's road wheels are to stay in contact with the bridge. Assume g=10ms-2

2. Sep 8, 2004

### Tide

What is the centripetal acceleration? :-)

3. Sep 8, 2004

### humanino

Welcome Neil !
As you can see :
No.

It will be possible to provide you hints about that

4. Sep 8, 2004

### humanino

You must assume that the car reached its maximum speed, therefore this speed being constant. Then use Tide's hint and the value given for g.

5. Sep 8, 2004

here is a hint, and its a BIG one, draw a free body diagram, and use this formula $$F = \frac{mv^2}{r}$$