Author Topic: Smart people only thread (Read 7812 times)

Saulbadguy · « **on:** June 24, 2010, 09:52:07 AM »

What relationship exists between motion and the Universal Law of Gravity?

The1BigWillie · « **Reply #1 on:** June 24, 2010, 09:55:02 AM »

I have some crap narrated by Morgan Freeman on my DVR that I need to watch first. I'll get back to you.

I'll go ahead and throw out my guess though.

Q: What relationship exists between motion and the Universal Law of Gravity?

A: Fat girls need love too. More cushion for the pushin'.

Pete · « **Reply #2 on:** June 24, 2010, 10:14:15 AM »

Ask Jesus.

kst8catfan · « **Reply #3 on:** June 24, 2010, 10:22:23 AM »

Quote from: Saulbadguy on June 24, 2010, 09:52:07 AM

What relationship exists between motion and the Universal Law of Gravity?

"The angle of the dangle is in direct proportion to the heat of the meat." - Freddie Newton 1645-1701 (Sir Isaac's strange little brother)

Brock Landers · « **Reply #4 on:** June 24, 2010, 10:31:27 AM »

Quote from: Saulbadguy on June 24, 2010, 09:52:07 AM

What relationship exists between motion and the Universal Law of Gravity?

Gravity has nothing to do with it. Because it's not the size of the boat, it's the motion of the ocean. Hope this helps.

AppleJack · « **Reply #5 on:** June 24, 2010, 11:09:45 AM »

Centrifugal Force

DILLIGAF · « **Reply #6 on:** June 24, 2010, 11:15:07 AM »

what goes up must come down

AzCat · « **Reply #7 on:** June 24, 2010, 12:18:16 PM »

Depends, what system are you working in?

Under Newton's Law, the simplest case, distance and mass are relevant to gravitation which exerts a force instantaneously at a distance. That is, gravity moves with infinite speed.

Under general relativity the motion of massive body creates a distortion in spacetime that propagates outward from the moving body at the speed of light. It's not quite that easy but that's the general idea.

From there it gets complicated.

CHONGS · « **Reply #8 on:** June 24, 2010, 12:19:05 PM »

conic sections

CHONGS · « **Reply #9 on:** June 24, 2010, 12:20:33 PM »

equal area equal time

Saulbadguy · « **Reply #10 on:** June 24, 2010, 12:26:20 PM »

Seems to me that, particles are in constant motion, right? Wouldn't gravity affect the particles no matter how small?

CHONGS · « **Reply #11 on:** June 24, 2010, 12:28:24 PM »

you are correct saul. gravity affects eveything (but is the weakest by far all of the forces)

Saulbadguy · « **Reply #12 on:** June 24, 2010, 12:33:44 PM »

What effects would the lack of gravity or micro-gravity have on motion? I think of how water reacts in space. Just floats there like a glob of particles, doing whatever it feels like. Do the particles just move around freely, or do they have to have some sort of opposing force to move?

If there was no gravity, would it just simply move forever?

CHONGS · « **Reply #13 on:** June 24, 2010, 12:43:30 PM »

the simple (classical) answer:
if the particles were point particles and neutral and at rest and there was no gravity they would remain motionless.

if they were not point particles (but still neutral) they would being to accelerate due to van der waals or higher order electromagnetic forces.

if gravity was there eventually the particles would attract each other (some particles would fly away but most would begin to orbit and form clusters)

mcmwcat · « **Reply #14 on:** June 24, 2010, 01:07:04 PM »

Quote from: Chingon on June 24, 2010, 12:43:30 PM

the simple (classical) answer:
if the particles were point particles and neutral and at rest and there was no gravity they would remain motionless.

if they were not point particles (but still neutral) they would being to accelerate due to van der waals or higher order electromagnetic forces.

if gravity was there eventually the particles would attract each other (some particles would fly away but most would begin to orbit and form clusters)

do point particles have zero mass?

CHONGS · « **Reply #15 on:** June 24, 2010, 01:09:20 PM »

no, but then again do point particles even exist?

tough question to answer

ChiComCat · « **Reply #16 on:** June 24, 2010, 01:21:37 PM »

This thread did a quick 180 from the first few replies

Saulbadguy · « **Reply #17 on:** June 24, 2010, 02:08:13 PM »

Does absolute zero gravity exist anywhere in the universe?

CHONGS · « **Reply #18 on:** June 24, 2010, 02:12:15 PM »

no (at least in the known visible universe)

pissclams · « **Reply #19 on:** June 24, 2010, 02:14:37 PM »

this thread sux ~~without pics~~!

ew2x4 · « **Reply #20 on:** June 24, 2010, 02:22:50 PM »

If there was a tunnel from one side of the Earth to the other, what would happen when passing through the center? Obviously if you take heat out of the equation.

steve dave · « **Reply #21 on:** June 24, 2010, 02:24:50 PM »

Quote from: ew2x4 on June 24, 2010, 02:22:50 PM

If there was a tunnel from one side of the Earth to the other, what would happen when passing through the center? Obviously if you take heat out of the equation.

You would be squashed

CNS · « **Reply #22 on:** June 24, 2010, 02:28:34 PM »

Quote from: ew2x4 on June 24, 2010, 02:22:50 PM

If there was a tunnel from one side of the Earth to the other, what would happen when passing through the center? Obviously if you take heat out of the equation.

Nothing really. Unless you filled that hole with a huge water slide with a pool at both ends. Then, it may be pretty awesome.

LinuxHuskerSometimesBasketballCat · « **Reply #23 on:** June 24, 2010, 02:45:28 PM »

I'm going with you'll oscillate about the center point of the tunnel going from end to end eternally if we're neglecting air resistance, and other frictional based factors.

CHONGS · « **Reply #24 on:** June 24, 2010, 02:46:57 PM »

linuxcat is correct