cpumasterwv's Page

More from cpumasterwv

Forum Posts

Comments

Posted on: Mind & Matter: That Whole Can of Worms
at 07/25/2009 3:26am

Aw, come on. I wanted to keep this one going.

Posted on: Gravity and Magnetism the same?
at 07/25/2009 3:24am

Wait, gimme a minute. I've got Seven of Nine on speed dial. She can figure this one out for us.

Posted on: Gravity and Magnetism the same?
at 07/24/2009 6:02pm

Eh, we live to annoy, and besides, I'm learning from all of this. Doesn't matter what I want to think, I need to learn ... more(+)

Eh, we live to annoy, and besides, I'm learning from all of this. Doesn't matter what I want to think, I need to learn calculus. Lots and lots of calculus. CCAF, here I come. close(-)

Posted on: Gravity and Magnetism the same?
at 07/24/2009 2:50pm

EUREKA! I wasted an entire weekend trying to work out the whole variable mass theory. So then help me out with this. If ... more(+)

ramparts wrote:

cpumasterwv wrote:You know its funny, I used that equation at Tech School to explain a question we were working out, and I almost came up with a singularity at the center of the Earth. We were trying to figure out how many time an object would pendulum (sp?) barring survivability and what not, the math never wanted to go to 0. Someone was like "Its a black hole!!!!" I had to throw something at him. Then we poked at it for a few more minuted and realized that there couldn't be a zero point because there is what I've been referring to as variable mass. The core spins and gravity is generated from a grouping of "zero points" that are constantly in motion. Center, but no Zero.

Hmm, I can assure you that if you're running through Newton's 1/r^2 equation (see my last post) and finding a singularity at the center of the Earth, it's your math that's off, not physics So rather than invent a new theory, perhaps check one's math?

I'm not sure what calculation you did, but I'll take a guess: did you look at the 1/r^2 equation, and find that at the center (when r=0), the force is infinite, since you can't divide by 0? That's a pretty common problem (and an interesting one even if it's not the one you ran into!), so maybe I can digress to explain it? This doesn't show the Earth has a central singularity - it assumes it! Newton proved a lovely little theorem showing that when you're inside a massive sphere, only the mass that's closer to the center than you are (no matter where in the sphere it is) will have a gravitational pull on you - all of the matter at a radius greater than you cancels out. So when you're inside the Earth's surface, you need to change the M term (Earth's mass) in the equation to reflect whatever the interior mass is - as a function of the radius. When you reach the center, there's obviously no interior mass to pull on you, so the M term becomes zero - and so does the force! The issue of dividing by zero doesn't even come into play.

Not sure if that's what you ran into, but I've always found that nifty

EUREKA! I wasted an entire weekend trying to work out the whole variable mass theory. So then help me out with this. If you were working out the amount of time it would take to reach the center, then said object would actually decelerate as you approched the center due to a lower amount of gravity? (Were assuming air resistance equal to sea level)

And if this is the case you get into longer and longer decimals to the point of would you ever reach the true center? I guess thats all up to scale. .000000625 in doesn't really figure into anything when the person... I mean... object is 6 ft tall. close(-)

Posted on: Why Are You Here?
at 07/24/2009 12:32pm

I'm definatly here to learn. All the other people in my shop at work post on the bodybuilder.com forums... This is my ... more(+)

I'm definatly here to learn. All the other people in my shop at work post on the bodybuilder.com forums... This is my escape into rational thought. close(-)

Commented on: New Moon Rocket Damaged in Test Flight, NASA Says
at 2009-10-30 10:41:22

The rocket was supposed to jackknife after burnout. If you watch the actual NASA.gov video, you hear them say that the ... more(+)

 close(-)

Commented on: Surprising, Huge Peaks Discovered in Saturn's Rings
at 2009-09-22 09:57:42

We don't need no stinkin Oxygen! We'll all be rich, Methane futures will go through the roof!

Commented on: Space Shuttles May Have to Fly Beyond 2010, Panel Says
at 2009-07-29 14:21:33

I don't know anymore. I'm in the military so the taxes they take out of my check go back into my check and so I don't ... more(+)

 close(-)

Commented on: Space Shuttles May Have to Fly Beyond 2010, Panel Says
at 2009-07-29 12:36:07

Chuck Norris could

Commented on: Space Shuttles May Have to Fly Beyond 2010, Panel Says
at 2009-07-29 12:34:54

No no Mr. President, put the shuttle down... Here play with this new DIRECT rocket. Thats right. Throw your money at ... more(+)

 close(-)