试题与答案

(6分)用图(a)所示的实验装置验证牛顿第二定律的实验中: (1)某同学通过实验

题型:实验题

题目:

(6分)用图(a)所示的实验装置验证牛顿第二定律的实验中:

(1)某同学通过实验得到如图(b)所示的

a—F图象,造成图线不过原点的原因是:在平衡摩擦力时木板与水平桌面间的倾角       (填“偏大”或“偏小”)。

(2)该同学在平衡摩擦力后进行实验,小车在运动过程中实际所受的拉力_______砝码和盘的总重力(填“大于”、“小于”或“等于”),为了便于探究、减小误差,应使小车质量M与砝码和盘的总质量m满足M______m的条件。

答案:

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下面是错误答案,用来干扰机器的。

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