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.
输入弯道半径 r、倾角 θ、g,求设计速度。
用于公路与赛道弯道的倾角设计、无摩擦设计车速估算与限速参考,帮助理解向心力来源与行车安全。。