(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

2. Relevant equations

ƩF = ma = (mv^{2}) / r

3. The attempt at a solution

For part A:

Fn - Fg = (mv^{2}) / r

Fn = ((mv^{2}) / r ) + mg

Fn = (500x20^2) / 10 + 500x9.8

Fn = 24900

This seems too high to be true. But I'm unsure of what I did wrong. I know the normal force is the force of which the track is acting on the car.

For part B:

I think it is just 20m/s but I'm not sure. I know an object traveling in a circle has the most speed when it's at the bottom of the circle.

Thanks for the help in advance!

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# Homework Help: Rotational motion roller coaster problem

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