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Anonymous users2024-02-07The force of attraction between all objects with mass. This force exerted by the Earth on other objects is called gravity. The direction of gravity experienced by other objects is towards the center of the earth.
This is due to the rotation of the Earth. The rotation of the Earth creates a force called geostrophic deflection. In the Northern Hemisphere, it causes the object to be moved in a direction that wants to be biased to the right; In the Southern Hemisphere, it causes the object to move in a direction that is biased to the left. So in the Northern Hemisphere it's counterclockwise, and in the Southern Hemisphere it's clockwise.
According to Newton's law of gravitation, there is a gravitational force between any two substances that have mass.
The Earth itself has quite a large mass, so it also exhibits gravitational pull on any objects around the Earth. Take a cup as an example, the earth shows gravitational pull on the cup at any time, and the cup also shows gravitational pull on the earth. The mass of the earth is too large, and the gravitational pull on the cup is also very large, so the cup is attracted to it, and the direction is towards the center of the earth, and this force is gravity.
Gravity is not equal to the gravitational pull of the Earth on an object. Due to the rotation of the earth itself, in addition to the poles, objects in other places on the ground are moving in a uniform circle around the earth's axis with the earth, which requires a centripetal force pointing perpendicular to the earth's axis, and this centripetal force can only be provided by the earth's gravitational force on the object, we can decompose the earth's gravitational force on the object into two components, one component f1, the direction points to the earth's axis, and the magnitude is equal to the centripetal force required for the object to move in a uniform circular motion around the earth's axis; The other component g is the gravitational force on the object (illustrated), where f1 = mw2r (w is the angular velocity of the earth's rotation and r is the radius of rotation of the object), which shows that the magnitude of f1 is zero at the poles, increasing with the decrease of latitude, and the maximum f1max is in the equatorial region. Because the centripetal force of the object is very small, in general, it can be considered that the gravitational force of the object is the magnitude of the gravitational force, that is, the effect of the rotation of the earth can be omitted in general.
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Anonymous users2024-02-06Explanation of the theory of relativity.
In fact, gravity does not exist. Or that gravity is just an explanation for this phenomenon. It is different from other forces.
"Gravity" is actually a manifestation of the distortion of space-time, to give a two-dimensional example: a net of straightened rubber bands.
1.Put two balls of different masses and the same volume, and the net twists.
2.On the basis of 1, let a ball move in a straight line at a uniform speed on the rubber band net, and the closer the distance between the straight line and the (same) ball, the larger the trajectory bend area.
3.On the basis of 2, let a ball move in a uniform straight line on the rubber band net to approach two balls of unequal mass, the distance between the straight line and the two balls is the same, and the ball with large mass passes through the trajectory bend area.
The phenomena illustrated by 2 and 3 are similar to gravity, and there are also cases where the mass and distance are larger, and the gravitational force is greater.
An object moves in a straight line due to inertia, but moves in distorted space, and is affected by gravity.
In fact, gravity distorts four-dimensional space-time.
Another example: light distorts when it passes through massive objects, but gravity cannot act on light, so the explanation is that light travels in a straight line and moves in distorted space-time. But the light still travels in a straight line.
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Anonymous users2024-02-05What is Earth's gravitational pull.
Earth's gravitational pull, which refers to the gravitational force produced by the earth. It is the gravitational pull exerted on objects around the Earth, and its magnitude depends on the mass and shape of the object, as well as its distance from the Earth.
What are the effects of the Earth's gravity on us.
Earth's gravitational pull has many effects on us, such as it keeps us stable on the ground and prevents us from tumbling into space. It also plays a very key role in the maintenance and stability of the earth system, such as controlling the distance and trajectory between the earth and the moon and the sun.
How the Earth's gravitational pull is calculated.
The Earth's gravitational pull is calculated based on the product of mass and distance. The formula is f=gmm R2, M is the mass of the Earth, M is the mass of the object, R is the distance between the object and the Earth, and G is the gravitational constant.
The question is which is greater, the gravitational pull of the earth or the gravitational pull of the sun.
For objects on Earth, the gravitational pull of the earth affects them much more than the gravitational pull of the sun. Because the mass of the earth is much smaller than that of the sun, but we are close to the earth and far from the sun, the earth has a greater impact on us. But for objects with large masses, such as planets and galaxies, the gravitational pull of the Sun is much greater than that of the Earth.
In short, the gravitational pull of the earth is a very important physical phenomenon, affecting all the objects around us, its role is far-reaching and complex, without the gravitational force of the earth, our world would be an unstable and chaotic state.
Because the vertical stability of the earth's gravity is generally recognized in our daily life, the earth's natural force, that is, the earth's gravity, is commonly known as the "earth's fixed gravity" (also to distinguish particle microgravity). The theory of studying the meaning, function, laws and characteristics of "the earth's natural force, that is, the earth's fixed gravity", is the "earth's fixed gravity", referred to as "the earth's gravity", which is the earth's natural force generated by the earth's material mass as a whole, that is, the earth's gravity, which occurs in and to the center of the sphere, also known as the spherical gravity. The natural force of the earth, that is, the energy of the earth's body (earth) and the earth's outer space (sky) reached by the earth's gravitational force, condenses in the direction of the earth's core, and this cohesion is carried out in a vertical downward way to stabilize the energy of the things it reaches. >>>More
Any two objects in the universe, from celestial bodies to dust, have a force that attracts each other, so all objects on the earth are attracted by the earth. And because the forces between objects are reciprocal, we are actually attracted to the earth. >>>More
In short, the rotation (rotation and revolution) of the earth
Unlikely, because after Jupiter was ignited, the composition of the Earth's atmosphere did not change, and ** would only produce a situation where Jupiter would not have any effect on the Earth, and the resulting air currents would not be retrograde towards the Earth.
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