曲线上各点的曲率半径是由曲线自身的形状所决定的 .当曲线为质点的运动轨道时 ,轨道上各点的曲率半径也可以直接由轨道自身的形状所决定 .所以 ,质点运动轨道上各点的曲率半径的计算可以完全作为一个纯粹的数学问题来处理 .但是 ,从物理学的角度看 ,质点的运动轨道是质点的运 The curvature radius of each point on the curve is determined by the shape of the curve itself. When the curve is the motion track of the particle, the radius of curvature of each point on the track can also be directly determined by the shape of the track itself. Therefore, the particle motion track The calculation of the radius of curvature of each point can be completely dealt with as a purely mathematical problem. However, from the perspective of physics, the motion path of the particle is the transport of the particle.