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在力的学习中,有很多同学对二力平衡和相互作用的两个力常常分辨不清。比如有这样一道题:下列说法中,哪两个力是平衡力?A.桌面对墨水瓶的支持力和桌子所受的重力;B.墨水瓶对桌面的压力和桌子对墨水瓶的支持力;C.墨水瓶所受重力和桌面对墨水瓶的支持力;D.墨水瓶对桌面的压力和墨
In the study of force, there are many students who are often unable to distinguish between the two forces of balance and interaction. For example, there is such a question: Which two forces are the balance force in the following statements: A. The support of the ink bottle on the desktop and the gravity of the table; B. The pressure of the ink bottle on the table and the support of the ink bottle on the table C. The gravity of the ink bottle and the support of the ink bottle on the desktop; D. The pressure and ink of the ink bottle on the desktop