由习题的斟酌,借助杠杆原理创新实验来测量人体的重心.强化了相似三角形在杠杆问题中的应用,又通过学生的家庭实验来实践,分析得到人体的重心位置,同时发现脚到重心的距离与身高的比值有一定的规律性.该实验设计和操作较为方便,效度高,具有一定的价值. By the exercise of discretion, with the help of the principle of lever experiment to measure the gravity of the human body.Improved the use of similar triangles in the lever problem, and through the practice of students’ family experiments, analysis of the body’s center of gravity position, and found the foot to the center of gravity distance And the height ratio has a certain regularity.The experimental design and operation more convenient, high validity, has a certain value.