Recent content by Jahnic

Excuse my ongoing confusion but out of the two I thought only centrifugal forces are not real. If centripetal forces are not real why are we considering them for part a and why does the track need to support both gravitational and centripetal forces? At point A the centripetal force points...

It does, thank you. Question is now, why is it acting upward? I thought centripetal accelerations are always directed towards the center of the circular motion and hence also the centripetal force.

Homework Statement A roller coaster car has a mass of 500 kg when fully loaded with passengers.(a)If the vehicle has a speed of 20.0 m/s at point A, what is the force exerted by the track on the car at this point?(b)What is the maximum speed the vehicle can have at B and still remain on the...