试题与答案

图甲所示为“探究杠杆平衡条件”的实验装置。若此时杠杆处于静止状态,则杠杆____

题型:实验题

题目:

图甲所示为“探究杠杆平衡条件”的实验装置。若此时杠杆处于静止状态,则杠杆_________(选填“处于”或“不处于”)平衡,试验中应先调节杠杆两端的平衡螺母,如图甲可将右端的平衡螺母向_________调节,或将左端的平衡螺母向______调节,使杠杆在________位置平衡,这样做是为了便于直接读出_______。乙图中杠杆在水平位置平衡,如果在两侧钩码下再各挂一个相同的钩码,则杠杆_______端将下沉。

答案:

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下面是错误答案,用来干扰机器的。

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