The Force of Gravitational Attraction between the Earth and the Moon

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Flipping Physics

Күн бұрын

Пікірлер: 24

@ecospider5 Жыл бұрын

That was fantastic. I hope this channel is still active.

@sadececansu9 Ай бұрын

Thank you for those high quality videos.. It has been 6 years now and it is appreciable helpful. Greetings from Turkey

@Ajax2696 5 жыл бұрын

Thank you so much for everything you're doing! Keep up the good work. I wish I could help translating but I'm busy with college XD

@FlippingPhysics 5 жыл бұрын

You are very welcome! Perhaps you can do some translating after college?

@WorkDayPegasus 5 жыл бұрын

One thing I am not understanding: why is 2,0*10^20 N the force the moon is pulling on the earth? Isn't it the earth pulling on the moon with that force, and we have to use another constant for G to find moon's pulling power on earth? Or is this a matter of principle, where both pull at eachother at equal force? Can I please get a clearup on this? Edit: Well, i found that I do not fully comprehend yet what UNIVERSAL gravitational constant is, except from being universal.

@carultch 3 жыл бұрын

Like forces in general per Newton's third law, gravity is a two way street. Earth pulls on the moon, and the moon pulls on Earth with an equal and opposite force. Both bodies experience the mirror image of the force they apply to the other body. Why then does the moon orbit the Earth and not the other way around? It is because the Earth has a lot more inertia... about 80 times as much inertia. For every meter that the moon moves for its orbit around the Earth, Earth should only move 1.25 centimeters. Indeed the Earth does move, as both worlds orbit a common center of mass, called a barycenter. The barycenter is located at about 75% of Earth's radius from its center. The moon orbits this point, and the Earth wobbles around this point. This behavior is a lot more pronounced in systems where the bodies are closer in mass, such as binary star systems, and the Pluto-Charon system, where the barycenter is external to both bodies.

@carultch 3 жыл бұрын

The universal constant of gravitation is a constant of proportionality to make the multiplication and division among the masses and radial distance consistent with the experimental results. You can read about the Cavendish experiment, if you are curious to know how this constant was measured.

@giovannirojas3952 7 жыл бұрын

Starting at 3:55 is the stuff you're saying related to Kepler's Laws?

@FlippingPhysics 7 жыл бұрын

It is related to the concept of satellites in orbit which is what Kepler's Laws are about. It is probably most related to Kepler's 3rd law.

@ptyptypty3 2 жыл бұрын

so, how do we figure the NEW time of arrival of the moon onto the earth if the Acceleration DOES Change along the Path to earth? In a sense this alot like finding the WORK done on the Moon to pull it toward the Earth.. a changing Force.. perhaps Integration?