- #1
kamranonline
- 10
- 0
I have two questions.
when a car or roller coaster travels in a loop. At the top of the loop the forces that acts on the car are all downwards i.e. W and normal , so the net force is acting downward. I can't figure our any other force acting upward, so what actually will keep the car sticked to surface of the loop?
Secondly, I am confuse as when does the normal force diminish at the top of the loop. I have seen some animations which showed that normal force becomes smaller and smaller until it reaches at the top. But don't really know what is counter-force for the normal force. Something to do with cos component of W i guess, but not clear how cos they are in the same direction.
English is not my first language so sorry for any mistakes.
when a car or roller coaster travels in a loop. At the top of the loop the forces that acts on the car are all downwards i.e. W and normal , so the net force is acting downward. I can't figure our any other force acting upward, so what actually will keep the car sticked to surface of the loop?
Secondly, I am confuse as when does the normal force diminish at the top of the loop. I have seen some animations which showed that normal force becomes smaller and smaller until it reaches at the top. But don't really know what is counter-force for the normal force. Something to do with cos component of W i guess, but not clear how cos they are in the same direction.
English is not my first language so sorry for any mistakes.