Posted by **jessie** on Sunday, February 15, 2009 at 8:31pm.

When the roller coaster is at the top of the loop, why doesn’t the person fall off the roller coaster?

What forces are acting on the person when the roller coaster is going round the loop? Is it gravitational force and normal force?

- science -
**Damon**, Sunday, February 15, 2009 at 8:55pm
well yes sort of but the normal force you are talking about is that giving centripetal acceleration

m v^2/R

at the top of the loop, m g the weight is down

However a normal force in the down direction of m v^2/R is required to keep the person moving in the circular loop.

So as long as m v^2/R is greater than m g, the person does not fall out.

so in the end

v^2/R >/= g

is the condition for not falling out of the roller coaster.

## Answer This Question

## Related Questions

- Math - The rattler roller coaster is 66 ft tall. if you are at the top of the ...
- Physics - we are doing a really dumb websearch in my Physics class on roller ...
- Physics - A roller coaster works by gravitational energy. The coaster car is ...
- Math - A group of 378 people are standing in line to ride a roller coaster.If ...
- physics - The radius of curvature of a loop-the-loop for a roller coaster is 11....
- Physics - The radius of curvature of a loop-the-loop for a roller coaster is 11....
- Physics - The radius of curvature of a loop-the-loop for a roller coaster is 11....
- Algebra - I NEED HELP A$AP, PLEASE! I dont understand how to do this :( I have ...
- physics - A roller coaster of mass 1000.0 kg passes point A with a speed of 1.80...
- physics - 3.A roller coaster has a vertical loop with radius 27.1 m. With what ...

More Related Questions