- #1

whit13j

- 5

- 0

## Homework Statement

A car is traveling through a valley at a constant speed, though not a constant velocity and (I believe) it is at the bottom. If the car's speed is 25 m/s, its mass is 1200 kg and the radius of the valley (r) is 25 meters, Use your force diagram to create a Fnet=ma equation for the Y-Direction. Then determine the magnitude of the force of the road acting on the car. (i.e. the Force Normal)

## Homework Equations

m = mass; v = velocity; r = radius

Fnet=(mv

^{2})/r

## The Attempt at a Solution

So I know the force body diagram. Fn (Normal Force) is greater than Fg (gravity).

Then when I continue to work with the equation I can come up with

Fg - Fn = (mv

^{2})/r which then becomes

Fn = Fg - (mv

^{2})/r

However after this step I don't know what to plug in or even how to solve for the numbers that need to be plugged in. Well gravity will be 11760 N but after that I am lost.

Thanks!