From NOAA's National Ocean Service, one of the bulges is created by the pull of moon gravitational field; the second bulge is created by earth's inertia.
How does the inertia form the second bulge?
2007-05-07 02:35:25 · 7 answers · asked by high-lighter 3 in Science & Mathematics ➔ Astronomy & Space
First, the gravity pulls moon and earth together. The moon is not totally revoluting around the earth, but earth is also rotating around the moon like the Olympic Lead Ball Swing. In this case, since the mass of earth is larger than the moon, so we could hardly see earth rotating the moon. In a computer simulation, you can amplify their effect and you could see that the center of revolving is not the earth, but just a bit away from the earth.
So, this effect has created centripetal forces on the edges of moon and earth when they are pulling each other, and this created a bulge on earth. If there is no moon, then there is no revolution on each other and just exist as axial rotation, so there will be no special bulges.
The second bulge is produced by the pull of the gravity towards the moon.
Since the revolution of moon on earth is very small, so the bulge behind the earth is smaller than the one in front of earth, and fore bulge is bigger also because of the gravitational pull is stronger in the fore of earth than the hind of earth.
2007-05-08 03:59:21 · answer #1 · answered by Anonymous · 0⤊ 0⤋
I am aware of the bulge from the pull of the moon and from a minor pull from the sun which augments the more extreme lunar pull at times. I had to look at inertia though (I thought I knew it all with respect to tides as I deal with them daily.) Inertia on the far side will make a tide that is highest and most marked at the equator than at the poles and can also augment the lunar/ solar pull. it is more noticeable directly opposite the moon as the gravity and the lunar pull leave the area more effected by countering earth gravity a bit. That's a tough one to put in words, but thanks, I learned something this morning too.
2007-05-13 09:16:32 · answer #2 · answered by mike453683 5 · 0⤊ 0⤋
The Moon's gravity pulls on the entire mass of the Earth. Not only is one side being pulled away from the centre, but the centre is also being pulled away from the opposite side. Result: Earth stretches.
The difficulty in picturing it comes from considering the centre to be a fixed point. It's not. It is as much subject to the lunar gravity as the edge nearest the Moon.
2007-05-08 04:39:54 · answer #3 · answered by Jason T 7 · 0⤊ 0⤋
The moon is pulling the water closest to it out away from the earth. It is also pulling the earth away from the water on the opposite side of the earth. Since the force of gravity decreases with distance, the force of the moon's gravity is greatest on the water closest to it, less on the earth, and least on the water on the other side of the earth.
2007-05-07 09:43:36 · answer #4 · answered by smartprimate 3 · 2⤊ 0⤋
NOAA's NOS says right. Here inertia is in sense of equilibrium.
2007-05-13 16:13:57 · answer #5 · answered by Anonymous · 0⤊ 0⤋
distance is important for the gravitational affect.
2007-05-07 10:25:41 · answer #6 · answered by hanibal 5 · 0⤊ 1⤋
I think penis
2014-11-25 17:51:09 · answer #7 · answered by lostmymind 2 · 0⤊ 0⤋