作用力与反作用力是同种性质的力吗？

ARE ACTING FORCE AND REACTING FORCE OF THE SAME NATURE

一般认为，作用力与反作用力一定是同种性质的力．本文对这种传统观点提出了疑问，以具体实例说明了作用力与反作用力不一定是同种性质的力，并从理论上进行了深入探讨．

It is generally accepted that the pair of fouces in Newton's third law are of the same nature. In this papet we demonstrate with actual examples that they may be different in nature. Theiretical discussion is also giren.