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1.图1甲所示为测量电动机匀速转动时角速度的实验装置,半径不大的圆形卡纸固定在电动机转轴上,在电动机的带动下匀速转动.在圆形卡纸的旁边
1. Figure 1A shows the experimental device for measuring the angular velocity when the motor rotates at a constant speed. The circular cardboard with a small radius is fixed on the motor shaft and is driven by the motor to rotate at a uniform speed. Beside the circular paper jam.