Question

How to calculate the friction force when a body travels through the loop (like in a roaller-coaster) at some point between the top and the bottom?????

Answer 1

I think Fgrav=mg

Step-by-step explanation:

The magnitude of the force acting on the roller coaster car (or passenger) can be calculated using the formula FGRAV=m.g, where the acceleration due to gravity is represented by g (where g=9.8 m/s2).

The magnitude of the normal force depends on three factors—

1. the speed of the car,
2. the radius of the loop,
3. and the mass of the rider.