有这样一道初中物理竞赛题 :有一台不准确的天平 ,是由于天平的两臂不相等 ,但砝码是准确的 .现要用这台天平准确地测出一物体的质量 ,该怎么做 ?正常解答 :把被测物体放在天平的左盘 ,在右盘中试加砝码使天平平衡 ,记下此时右盘中砝码的质量m1;再把被测物体放在天平右盘 ,在左 There is such a junior high school physics contest title: There is an inaccurate scale because the two arms of the scale are not equal, but the weight is accurate. Now we must use this scale to accurately measure the quality of an object. What should I do? Normal solution: Place the object under test on the left side of the scale. In the right hand, add the weights to balance the balance. Record the weight m1 of the weight in the right dial. Then place the measured object on the balance plate. Left