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高级中学课本物理(上册)“验证向心力公式的实验”装置如图1所示。A为做圆周运动的圆柱体,可在横杆上自由滑动,F为弹簧,E为配重,可调节后用螺栓拧紧固定于横杆上,起平衡作用.B为凸柱,C为半径指示器.当摇动把手D使物体以某一角速度转动时,弹簧伸长,A外移,当角速度适当时,凸柱碰不到半径指示器C,只划过指示器的缺口.
High school textbook physics (volume I)“Verification of centripetal force formula experiment” device is shown in Figure 1. A is a circular motion cylinder, can slide freely on the crossbar, F is a spring, E is a counterweight, can be adjusted and then bolted and fixed on the crossbar, play a balancing role. B is a convex column, C is a radius Indicator. When the handle D is shaken to make the object rotate at a certain angular velocity, the spring stretches and A moves outwards. When the angular velocity is appropriate, the convex column does not touch the radius indicator C and only passes through the indicator’s notch.