問題詳情
35. A toy car is running on a banked circular track of radius 10 m, as shown below. If the car weighs5 kg and on wet ice, find the maximum velocity for the car to keep on the track without skid.(Gravitational acceleration g = 10 m/s2 , cos30° = 0.87, cos60° = 0.5)
(A) 5.4 m/s
(B) 7.6 m/s
(C) 9.4 m/s
(D) 12.6 m/s
(E) 15.7 m/s
參考答案
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108年出過, v= √(tan30 ☆☆) =√........