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Roller Coaster

  • Thread starter sracks
  • Start date
  • #1
9
0

Homework Statement


The normal force equals the magnitude of the gravitational force as a roller coaster car crosses the top of a 37 m diameter loop-the-loop.
What is the car's speed at the top?

Homework Equations


n-mg=0
I don't know what equation to use

The Attempt at a Solution


I honestly don't know what to do...
 

Answers and Replies

  • #2
Shooting Star
Homework Helper
1,977
4
You have to do something. What's the force called which acts radially inward on a mass going in a circle? And what's the magnitude?
 

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