試題詳解

【已刪除】39. A car travels at a constant speed of 60 km/hr on a level circular turn of radius of 40 m. What is the minimum coefficient of static friction between tire and the roadway to allow the car to make the turn without sliding? (Gravitational acceleration g = 10 m/s² )
(A) 0.83
(B) 0.73
(C) 0.63
(D) 0.53
(E) 0.43