重力和压力是初中物理的重要内容之一 ,贯穿于整个力学范畴。正确理解和运用重力和压力的关系 ,是初中同学学好力学的关键。一、重力和压力的区别重力和压力都归属于力学的范畴 ,是一个物体对另一个物体的作用 ,重力也可称为重量。仅考虑地球的吸引而产生的力 ,而压力不仅考虑地球引力 ,还需考虑外界物体施加的力 ,二者的差异可表现在 Gravity and stress are one of the important contents of junior high school physics, and it runs through the entire mechanics category. The correct understanding and application of the relationship between gravity and pressure is the key to junior high school students’ learning of mechanics. First, the difference between gravity and pressure Gravity and pressure are attributed to the category of mechanics, is the role of an object on another object, gravity can also be called the weight. Considering only the force generated by the attraction of the Earth, the pressure not only considers the gravitational force of the Earth, but also takes into account the force exerted by the external object. The difference between the two can be expressed in