The relationship between inertial mass and gravitational mass daily experience shows that the heavier the object, the harder it is to change its state of motion. That is, the greater the gravitational mass of an object, the greater the mass of inertia, and the very precise experiment proves that the inertial mass of any object is strictly proportional to its gravitational mass. If we choose the appropriate units, we can make the gravitational mass of the object is equal to the value of its inertia mass, that is, M-=m habitual. So can we say that the gravitational mass of an object is its inertia mass? Ask more clearly, whether inertia is the source of gravitational field? Of course not. Inertia is the ability of an object to resist external forces to change its mechanical motion, and the source of the gravitational field is the ability of an object to produce gravitational fields, which are two completely different properties of an object and must not be confused. Just because there is a strict proportional relationship between them, we can use the gravitational mass of an object as a measure of its inertia, and vice versa. In real life, we often use this method. For example, the balance says the gravitational mass of an object, but from the result of the call, we immediately know how much inertia the object is. Einstein had very vividly used the gravitational attraction between Earth and Stone as an example to illustrate that gravity and inertia were two physical properties that were completely different. "The earth attracts stones with gravity and has no knowledge of its inertial mass," he said. The ' summoning ' force of the Earth is related to the mass of gravity, while the movement of the stone ' answer ' is related to the mass of inertia. "However, there is a question that is worth pondering: inertia and gravity are completely different physical properties, but since there is a universal, strictly proportional relationship between them, is it possible that they are merely manifestations of the same nature of the object in different aspects?" The answer to this question is yes. Einstein's general Theory of relativity states that the inertia and gravitational properties of objects originate from the same source. In general relativity, some of the parameters are manifested as the inertia of the object on the one hand and the natural source of the gravitational field. This conclusion has successfully undergone a very accurate experimental test. This kind of experiment has gone through 300 years of history, and is still in progress. From the Newton era of precision to 10^ (-3) developed to 1922 Edwis increased to 3x10^ (-9). By 1964 Dick increased the accuracy to (1.3±1.0) x10^ (-11). In 1971, Blegenschue also increased the accuracy of the experiment to 10^ (-12) Order of magnitude. All of these experiments have confirmed the = constant. Therefore, it is generally believed that the two different properties of an object-inertia and gravitational properties-are different aspects of its same nature. In other words, the inertia and gravitational properties of an object are derived from the same nature of the object. Einstein used the equivalence of these two qualities as the starting point for his general theory of relativity. Therefore, from the perspective of modern physics, the equivalence of the two not accidental, which contains profound physical significance
Relationship between mass of inertia and gravitational mass
