/sci/ - Science & Math

they wouldn't

they'd make solar farms because it's easier.

also because the earth is already slowing down and you don't want to slow it down further

you mean wind power?

>>4775394

If its done in an effective way it would supply us with energy for 100 000 years without anyone even noticing

Serious question /sci/

Lets say the Earth and everything on it is spinning at the same rate. Lets call the Earth and everything on it one body. If this body is spinning in a vaccum, how is it using creating or storing kinetic energy, since energy is not needed to keep it spinning?

>>4775374
>infinite rotational energy

a giant fan that spins due to the Coriolis effect and trails behind the earth and one on the opposite side

>>4776044
It does need energy to keep spinning. The energy to spin comes from the spinning.

>>4776071
Shit like this makes me anxious that EK is going to appear and start posting.

>>4776044

You are confusing energy and force.

>>4776071

Intradesting. So is it any different for an object traveling through space thats not spinning? Like, the energy to propel the object comes from the objects motion?

>>4776094

see

>>4776087

>>4776071

>>4776103

I see. So how does a spinning object create energy? How is it expressed, in physical terms and mathematically?

Sorry, I'm just sort of learning about math and physics.

>>4776351
It doesn't create energy. The energy is already in the spinning. The spinning IS the energy. Thing of a block of wood, and you slide it over some ice. It moves, because it has energy, and this energy doesn't just go away, so it continues moving. It's like that, except the Earth is spinning

>>4776364

Your analogy makes it clear. Is there a mathematical expression? Also, what would be a method of capturing this energy for human use?

>>4776368
http://en.wikipedia.org/wiki/Rotational_energy
I'm not really sure how you'd tap into it, maybe you could make a giant ring in space with rollers, which are each a magnetic turbine. It rolls on another ring inside of it, which is attached to the Earth by supports.

I actually have no idea; my idea's a pretty horrible way to harvest it.

>>4776368

Capturing any of the earth's rotational energy would cause the earth to slow down, so whether or not it's a good idea is debatable.

>>4776403

Thanks for the info. I go to a music conservatory and there's many math books in the library...(all the music you can name though). I dont want to let that be an excuse for not knowing rudimentary math and physics, but legitimate resources are hard to find, even online