试题与答案

一个物体在平衡力的作用下 A.一定是静止状态 B.运动状态一定不会发生改变 C.

题型:选择题

题目:

一个物体在平衡力的作用下

A.一定是静止状态

B.运动状态一定不会发生改变

C.一定是匀速直线运动状态

D.运动状态一定会发生改变

答案:

答案:B

题目分析:物体在平衡力作用下会处于平衡状态,平衡状态时物体保持静止或匀速直线运动状态。故运动状态一定不会发生改变。

故选B

点评:平衡状态在解决物理问题时,有很多的应用,一定熟悉平衡状态的含义和特征,即平衡状态是受平衡力作用时的状态,平衡状态时物体保持静止或匀速直线运动状态。

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