1. In physics, also known as "acceleration of gravity", the gravity of an object G=mg

The acceleration of an object near the surface of the Earth, when it's only experiencing heavy forces, is called the acceleration of gravity, or the acceleration of a free fall, and it's called g. The direction of g is always going to be straight down. At the same location, the gravitational acceleration of any object is the same. Both theoretical analysis and accurate experiments show that the value of g increases slightly with the increase of latitude, such as g=9.780 m/s 2 near the equator and g=9.832 m/s 2 in the Arctic region. Since g does not change much with latitude, g=9.80665 m/s (2 m/s) of an object accurately measured at sea level at 45° latitude is taken as the standard value of gravitational acceleration internationally. In solving problems near the Earth's surface, g is usually used as a constant, which can be taken as g=9.80 m/s 2 in general calculations. The value of gravitational acceleration decreases with increasing altitude. g changes little when the height of the object is much less than the radius of the Earth. However, when the height above the ground is larger, the value of g decreases significantly, and g cannot be considered as a constant [1].
Gravitational acceleration is the acceleration gravitational an object exerts. It's also called the acceleration of a free fall, and it's given by g. The direction is straight down, and its magnitude can be determined by a variety of methods.
Usually refers to the acceleration of an object near the ground falling in a vacuum under the action of Earth's gravity, denoted as g. For ease of calculation, the approximate standard value is usually taken to the power of 980 cm/s or the power of 9.8 m/s. The falling acceleration of objects near the surface of the moon, other planets or stars is referred to as the lunar gravitational acceleration and the gravitational acceleration of a planet or a star respectively.
Gravitational acceleration of free fall expression g=G*M/(r^2) Galileo proposed the application of the measurement field of physics to the field of application of the gravitational acceleration vertical downward symbol of physics The basic unit m/s^2 is usually 9.8m/s^2 or 10m/s^2. The maximum acceleration a person can tolerate is 7-8 g, beyond which coma or death can occur. Because the reason for the acceleration is because of a force, and to accelerate n G you have to accelerate n times the force of your own gravity in the direction of that acceleration, which means that if you're 60 kilograms of weight, if you're in an airplane or a rocket and you're accelerating 10 grams, you're going to experience 5880 tons of force, that's a force, It's hard for the average person to bear, and even highly trained people can take a lot of physical damage. For example, 5G refers to 5 gravity acceleration. Because the application environment of industrial control equipment is relatively complex, it requires the ability to withstand the impact, which means that the module can resist the impact of the maximum 5 gravity acceleration.