如何分辨受力物体与施力物体? 如何区分施力物体和受力物体
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重力是由于物体具有质量而在物体间产生的万有引力的一个分力,如果考虑一个物体,比如足球,它的重力是由于地球的引力而造成的,施力物体是地球,足球是受力物体;如果考虑的是地球,那么施力的是足球,受力的地球
受力和施力是相对的而言的,没有唯一的.
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