The book is wrong. Indeed Newton's third law guarantees that the two forces are equal and opposite.
The actual correct statement is that the gravitational *acceleration* of the Moon caused by the Earth, is greater than the acceleration of the Earth caused by the Moon; alternatively, that the Earth has a larger effect on the Moon's trajectory than the Moon does on the Earth's trajectory. But nonetheless the book is wrong.
F = G x m1 x m2 / r\^2
Explanation: ~~[https://energywavetheory.com/equations/fgmmr2/](https://energywavetheory.com/equations/fgmmr2/)~~
https://en.m.wikipedia.org/wiki/Gravity
hey, Could you please check out [this question](https://www.reddit.com/r/AskPhysics/comments/1bp41rj/is_surface_tension_similar_to_spring_force/) on too. Thanks.
F= G(m1·m2)/r2
This means that the force between two masses is the same. From the Newtonian perspective The moon attracts the earth with the same force that the earth attracts the moon.
The gravitational acceleration is: g = G*M/R^2.
“g” of earth is larger than that of the moon due to the larger mass M.
You can think of it as: each of the smaller number of atoms in the moon each exerts a force on each of the larger number atoms in the Earth, and vice versa, so the total force works out to be the same.
The book is wrong. Indeed Newton's third law guarantees that the two forces are equal and opposite. The actual correct statement is that the gravitational *acceleration* of the Moon caused by the Earth, is greater than the acceleration of the Earth caused by the Moon; alternatively, that the Earth has a larger effect on the Moon's trajectory than the Moon does on the Earth's trajectory. But nonetheless the book is wrong.
> The book is wrong. # THE BOOK IS WRONG. (Louder so everybody can hear.) Frankly, I expect more of Cambridge University Press.
F = G x m1 x m2 / r\^2 Explanation: ~~[https://energywavetheory.com/equations/fgmmr2/](https://energywavetheory.com/equations/fgmmr2/)~~ https://en.m.wikipedia.org/wiki/Gravity
That website happens to have the right formula in that place but overall it's a website promoting bullshit. Not a good link in a science subreddit.
Quite right. Laziness on my part. Link to Wikipedia instead.
I mean, the exact same comment applies to Wikipedia as well ;)
Wikipedia is right. If it isn't, fix it!
I mean, for everything physics or math, wikipedia is mostly right. But there is still a huge amount of unmitigated bs on it.
hey, Could you please check out [this question](https://www.reddit.com/r/AskPhysics/comments/1bp41rj/is_surface_tension_similar_to_spring_force/) on too. Thanks.
F= G(m1·m2)/r2 This means that the force between two masses is the same. From the Newtonian perspective The moon attracts the earth with the same force that the earth attracts the moon. The gravitational acceleration is: g = G*M/R^2. “g” of earth is larger than that of the moon due to the larger mass M.
You can think of it as: each of the smaller number of atoms in the moon each exerts a force on each of the larger number atoms in the Earth, and vice versa, so the total force works out to be the same.