很多同学在初学压力概念时,由物体放在水平地面上受到的压力数值等于物体的重力大小而误认为压力和重力存在必然联系,甚至认为压力就等于重力. 为了使同学们明晰压力和重力,现特从以下几方面加以比较说明. 1.定义不同压力是垂直作用在物体表面上的力. 重力是物体由于受到地球的吸引而产生的 Many students in the novice concept of pressure, the pressure on the level of the object on the ground is equal to the value of the gravity of the object and mistakenly believe that pressure and gravity are inextricably linked, even that the pressure is equal to gravity. In order to enable students to clarify the pressure and gravity, The following are the aspects to be compared: 1. Defining different pressures is the force acting perpendicular to the surface of the object. Gravity is caused by the attraction of the earth to the object.