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圆锥摆运动是轨迹在水平面内的一种匀速圆周运动,此类运动的特点有:(1)运动特点.物体做匀速圆周运动,且圆周运动的圆心在水平面内;(2)受力特点.物体所受的重力、弹力、电场力、磁场力等的合力充当向心力.解决这类问题的一般思路和方法:(1)以做圆锥摆运动的物体为研究对象,明确它的运动情况;(2)确定它的轨道平面,找出它的圆心和半径;(3)分析它的受力情况,确定向心力的来源及向心力的大小;(4)根据牛顿第二定律及向心力公式列方程求解.中学里常见的圆锥摆运动归类分析如下.1力学中的圆锥摆
The conical pendulum motion is a kind of uniform circular motion in the horizontal plane of the track. The characteristics of this type of motion are: (1) the characteristics of the movement. The object is in a uniform circular motion, and the center of the circular motion is in the horizontal plane; (2) the characteristics of the force. The combined force of gravity, elastic force, electric field force, and magnetic field force of an object acts as a centripetal force. The general ideas and methods for solving such problems are as follows: (1) The object of the conical pendulum motion is the object of study, and its movement is clearly defined; ( 2) Determine its orbital plane, find out its center and radius; (3) Analyze its force condition, determine the source of centripetal force and the magnitude of centripetal force; (4) Solve according to Newton’s second law and centripetal force equations. The common conical pendulum movements in secondary schools are classified as follows.1 Cone pendulum in mechanics