压力和重力是初中物理力学部分的两个重要内容,也是困惑初学物理者的一大难题。弄清压力和重力的区别与联系,是解决这一难点的关键。一压力与重力的区别 1.定义(即实质)不同。重力是由地球吸引作用而使物体受到的力。由此可知:重力是地球对它附近的物体的一种吸引作用,施力物体是地球,受力物体是地球附近的一切物体。而压力是垂直压在物体表面上的力,是由于物体 Stress and gravity are two important parts of the physics and mechanics of junior middle school, and they are also a big problem for beginner physics. Knowing the difference and connection between stress and gravity is the key to solving this difficulty. The difference between a pressure and gravity 1. The definition (ie, substance) is different. Gravity is the force exerted by the earth to attract objects. It can be seen that: Gravity is an attractive effect of the Earth on objects near it. The force object is the Earth, and the force object is everything near the Earth. The pressure is the force that vertically presses on the surface of the object because the object