The tides are slowing down the earth!

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49

#### +8 1. woodhatch commented 10 years ago

We're all doomed!!!!
22

#### +3 2. BenderBRodriguez commented 10 years ago

Someone please explain me why are the waves raised on the other side as well. Which part of gravity theory explains that?
22

#### +1 3. sealand commented 10 years ago

And when all the planets in our solar system lined up in the 80's the earth was ripped apart... Good times.
36

#### +4 4. c0mmanderKeen commented 10 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
27

#### +4 5. Kinslayer commented 10 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.
47

#### +7 6. ZaMpTi commented 10 years ago

well anyway we will all be dead by december so who cares :p
27

#### +3 7. Break-a-leg commented 10 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)
54

#### +1 8. loadrunner commented 10 years ago

I bet a big meteor would do the trick
30

#### +1 9. medicino commented 10 years ago

So simple even Bill O'Reilly could finally drop his "tides goes in tides goes out" argument.
54

#### +1 10. ringmaster commented 10 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.
18

#### 0 11. sntboss commented 10 years ago

i like Ur lesson i want more
32

#### 0 12. cyberdevil commented 10 years ago

Third quick physics video I watch, and I keep learning! Looking forward to the next one!