The tides are slowing down the earth!
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2. BenderBRodriguez commented 11 years ago
Someone please explain me why are the waves raised on the other side as well. Which part of gravity theory explains that?
4. c0mmanderKeen commented 11 years ago
#2 I believe this is due to the centrifugal force, or more precise the inertia on the side of the earth furthest away from the moon. When calculating the gravitational forces, the vector's center is not at the earths core, but in between the two bodies. Maybe this picture will help. Courtesy of wikipedia http://upload.wikimedia.org/wikipedia/commons/5/59/Orbit3.gif
5. Kinslayer commented 11 years ago
It is not true that it is high tide when the moon is over you and under you. It is the opposit, it is low tide when the moon is over you. This is because the water of the earth is 'to slow' to follow the rotation of the earth. Try this with a pendulum: hold the rope of the pendulum in your hand and move your hand slowely from left to right. As long as the pendulum can keep up with the speed of your hand it will be left when your hand is left and right if your hand is right. BUT if you move your hand 'too fast' the pendulum will be LEFT when your hand is RIGHT, and RIGHT when your hand is LEFT. this also applies on the tidings on earth.
7. Break-a-leg commented 11 years ago
As for the moon being ripped to shreds if it comes too close to earth: It won't happen. The distance between the earth and the moon is increasing (source: http://www.newton.dep.anl.gov/askasci/ast99/ast99639.htm)
8. loadrunner commented 11 years ago
I bet a big meteor would do the trick
10. ringmaster commented 11 years ago
When time comes that Earth almost has stopped spinning the Sun will have increased so much that no one will be here to witness it, the math of this I leave to others.
12. cyberdevil commented 11 years ago
Third quick physics video I watch, and I keep learning! Looking forward to the next one!
+8 1. woodhatch commented 11 years ago