A person rides a loop-the-loop at an amusement park. The cart circles the track at a constant speed. At the top of the loop, the normal force exerted by the seat equals the person's weight, mg. At the bottom of the loop, the force exerted by the seat will be _______.

Question

geerky42 · Answer

i got 2mg, but textbook said it is 3mg. why?

anonymous · Answer

because if the seat is exerting a force of mg at the top of the track, that means the required centripetal force must be 2mg:

anonymous · Answer

|dw:1351487423203:dw|

anonymous · Answer

|dw:1351487489690:dw|