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力是中学物理力学问题分支中最为重要的一个概念,是初中物理力学的入门知识,是今后学习压强、浮力、简单机械、功等知识的基础。因此,同学们应对力的确切物理含义要有清楚的认识和理解。力又是一个非常抽象的概念,它看不见,摸不着,人们最初认识力是人类在劳动中通过肌肉紧张而感觉到的。墨子看到人们通过肌肉的动作,如举、推、掷、踢、蹬,
Force is the most important concept in the branch of physics and mechanics in middle school. It is the introductory knowledge of junior middle school physics and mechanics, and it is the basis for future study of pressure, buoyancy, simple machinery, and other knowledge. Therefore, students should have a clear understanding and understanding of the exact physical meaning of the coping force. Force is also a very abstract concept. It cannot be seen or touched. People’s initial cognitive power is felt by human beings through muscle tension in their labor. Mozi sees people’s actions through muscles, such as lifting, pushing, throwing, kicking, and crouching.