按题目要求作图 (1)如图所示,一物体以某一速度冲上表面光滑的固

按题目要求作图

1)如图所示,一物体以某一速度冲上表面光滑的固定斜面,请画出物体在上滑过程中所受的力的示意图.(不考虑空气阻力,所有力的作用点画在物体的重心)

2)根据小磁针静止时的指向,标出图中的磁感线方向和磁体的NS极.

答案

(1)多画一个力扣一分,多画两个力不得分;(2)方向和NS各得一分。

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