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一轻绳上端固定,下端栓一小球,使小球在水平面内作匀速圆周运动,这种装置叫作锥摆。锥摆作圆周运动时,其转速ω必须大于一定值,否则就不可能作圆周运动,即受到极限条件的限制。设一轻绳长度为l,上端固定,下端栓一质量为m的小球,使小球在水平面内以角速度ω作匀速圆周运
A light rope is fixed at the upper end, and a small ball is affixed at the lower end so that the ball moves at a constant speed in the horizontal plane. This device is called a cone pendulum. When the cone is oscillating in a circular motion, its rotational speed ω must be greater than a certain value, otherwise it is impossible to make a circular motion, that is, limited by the limit conditions. The length of the light rope is l, the upper end is fixed, and the lower end is plugged with a ball with mass m, so that the ball is transported at a uniform speed in the horizontal plane at the angular velocity ω.