怎样区分受力与施力?
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哪个是施力物并不是一定,那要看你研究的物体是哪个,如果研究的是桶的受力,那么施力物就是手,研究的是手的受力,那么施力物就是桶.作用力与反作用力是同时存在的,桶受到手的作用力,而手也受到了桶的反作用力.
手对桶施力(作用力),同时手受到桶的支持力(反作用力)。
如果很好的掌握作用力与反作用力,这个问题就迎刃而解了。
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