Roller Coaster Car Driving

  • Thread starter hbteen
  • Start date
  • #1
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Homework Statement



As a roller coaster car crosses on the top of a 10 m radius hill (the track is underneath the car), its apparent weight is one-half its true weight. What is the car's speed at the top?


Homework Equations




A=v^2/r
F=ma

The Attempt at a Solution



I tried saying the weight was .5 and solving for velocity, but I still have a missing # for the Force variable.
Where do I go from there?
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
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Welcome to PF!

Hi hbteen! Welcome to PF! :smile:
As a roller coaster car crosses on the top of a 10 m radius hill (the track is underneath the car), its apparent weight is one-half its true weight. What is the car's speed at the top?

A=v^2/r
F=ma

I tried saying the weight was .5 and solving for velocity, but I still have a missing # for the Force variable.

The weight doesn't matter … it cancels out. :wink:

Show us what you tried, and then we'll see where the problem is. :smile:
 

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