在不同转角下测量圆盘的转动惯量产生误差的研究

Under Different Angle Error of Measuring the Rotational Inertia of the Disc are Generated

由于实验用三线摆法测定物体转动惯量的转角较大,但是理论推出的转角一般控制在5度以内,故现采用投影法和平均值计算转角的方法来研究在不同转角下测量圆盘的转动惯量产生的误差,并分析圆盘转动惯量测量值与理论值的百分差与转角之间的关系,最后得出圆盘转动惯量测量值与理论值的百分差随转角变化成二次曲线。

Due to experiment with three wire pendulum method for determining the Angle of moment of inertia of the object is bigger, but the theory of general control within five degrees Angle, so we use the projection method and the average Angle method to study under different Angle error of measuring the rotational inertia of the disc,moment of inertia of the disc and analysis the percentage difference between the theoretical value and measured value and the relationship between the Angle,finally it is concluded that the percentage of moment of inertia of the disc measured value with the theoretical value changing with Angle into a quadratic curve.