Draw a motion diagram and a free-body diagram for a roller coaster car at thetop of a "loop-de-loop" (i.e., when the car is upside down).Do not ignoreair resistance, and assume that the car is moving rapidly enough to remain infirm contact with the rails.In particular, explainwhy there is no outward force on the car.

Radhika Batra , 10 Years ago

Grade 11