1.探究杠杆的平衡条件(1)杠杆平衡是指杠杆处于静止状态或匀速转动.(2)实验前:应调节杠杆两端的螺母,使杠杆在水平位置平衡,这样做的目的是:可以消除杠杆自重对实验结果的影响;实验中:应调节杠杆两端的钩码的个数或位置,使杠杆在水平位置平衡,这样做的目的是:可以方便地从杠杆上直接量出力臂. (1) lever balance refers to the lever is at rest or uniform rotation (2) before the experiment: the lever should be adjusted at both ends of the lever so that the lever in the horizontal position balance, the purpose is to do so: you can eliminate In the experiment, the number or position of the hook code at both ends of the lever should be adjusted so that the lever is balanced in the horizontal position. The purpose of doing this is that it is convenient to directly measure the lever from the lever.