Roller coaster physics

  • Thread starter Jason03
  • Start date
  • #1
Jason03
161
0
Im trying to figure when you have a rollercoaster or train, how are the forces different at the top of tracks compared to the bottom of the tracks.

How does this relate to setting up F=MA...and the Normal Force.

I know at the top you would have a feeling of weightlessness and at the bottom you are pushed into your seat greatly.

Thanks
 

Answers and Replies

  • #2
Dick
Science Advisor
Homework Helper
26,263
621
It doesn't relate to any real forces, it relates to the acceleration of the rider. At the top his acceleration is down, at the bottom it's up. The normal force has to balance both gravity and the acceleration of the rider.
 
  • #3
Jason03
161
0
ok, I am setting up a problem that asks for the force exerted on the seat of an 80 kg person. At the top, and at the bottom


So I am using this equ. ( i have r,v, m and g)

F=MA

N-mg = m (v^2/r)


so what would differ for the top and bottom?
 
  • #4
Dick
Science Advisor
Homework Helper
26,263
621
The direction of the v^2/r. It's directed towards the center of rotation. At the top, it's down. At the bottom, it's up. You have to keep track of the direction of v^2/r by hand.
 
  • #5
Jason03
161
0
ok thanks...i will give that a try
 

Suggested for: Roller coaster physics

Replies
9
Views
560
  • Last Post
Replies
5
Views
588
  • Last Post
Replies
8
Views
529
Replies
4
Views
642
  • Last Post
Replies
7
Views
2K
Replies
8
Views
618
  • Last Post
Replies
5
Views
763
  • Last Post
Replies
3
Views
5K
Top