Six roller-coaster carts pass over the same semicircular "bump." The mass M of each cart (including passenger) and the normal force n of the track on the cart at the top of each bump are given in the figures.
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詳細介紹
Rank the speeds of the different carts as each passes over the top of the bump.
(a) F=300N, M=300kg
(b) F=800N, M=800kg
(c) F=400N, M=200kg
(d) F=200N, M=400kg
(e) F=800N, M=100kg
(f) F=400N, M=100kg
[Solution]
The net force of the system supply the centripetal force.
