变力矩作用下刚体转动规律的实验研究

The experiment research of rigid body rotating rulc──under the action of the changes torque

恒力矩作用下,刚体转动规律的实验已有定型产品,但变力矩作用下刚体转动规律的实验笔者尚未见到,这主要是实验技术上的困难造成的.笔者把原有的气垫转盘实验仪进行了改进,改进的主要内容是,在气轴上缠绕质量分布均匀的金属链,金属链下落,长度不断变化时,把变力传给转盘.使转盘受到变力矩的作用,通过光电计时系统对时间的准确测量,可以进行变力矩作用下动能定理和角动量原理的实验研究.

:Under the action of the constant torque the experiment of rigid body rotating rulehas brought finalized products int being,but acted by the changes torque,the experiment ofrigid body rotating rule has not yet oppeared mainly because of the difficulty in experimentaltechnology,The author of this paper has improved experimental device of air cushion disk.The main improvement is the air axle sleeve wrapped by a mental chain of uniform quality.Falling down and keeping its length unchangeable. the metal chain transmits changes force tothe desk,and the desk is brought into effect by the changes torque In this case,an experi-mental research can be done which is on the principle of kinetic energy and angular momen-tum by the action of the changes torque,and with the exast time measured by using an elec-tronic timer.