摩擦力与哪些因素有关的探究实验设计

2025-03-15 13:51:29
推荐回答(2个)
回答(1):

探究摩擦力与哪些因素有关的实验原理是二力平衡条件。用弹簧测力计水平匀速拉动木块,使木块做匀速直线运动,木块处于平衡状态,由二力平衡条件可知,滑动摩擦力等于拉力.
探究摩擦力的大小与什么因素有关的实验的方法和过程
一、提出问题:摩擦力的大小与什么因素有关?
二、猜想与假设:
A:可能与接触面所受的压力有关
B:可能与接触面的粗糙程度有关
C:可能与接触的面积大小有关
三、设计实验:器材:木板、木块、弹簧测力计、砝码、棉布
四、原理:二力平衡的条件
五、步骤:
1、把木块放在木板上,用弹簧测力计拉木块匀速运动,读出这时的拉力F1;
2、在木块上放砝码,用弹簧测力计拉木块匀速运动,读出这时的拉力F2;
3在木板上固定好毛巾,放上木块,用弹簧测力计拉木块匀速运动,读出这时的拉力F3
六、结论:
结论一:接触面的粗糙程度一定时,压力越大摩擦力越大;
结论二:压力一定时,接触面越粗糙,摩擦力就越大。

回答(2):

第七章运动和力第六节《学生实验探究摩擦力的大小与什么有关》

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