Find the frictionless design speed for a banked curve from its radius and banking angle, where the horizontal component of the normal force supplies the centripetal force.
輸入彎道半徑 r、傾角 θ、g,求設計速度。
用於公路與賽道彎道的傾角設計、無摩擦設計車速估算與限速參考,幫助理解向心力來源與行車安全。。