Help needed with physics
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1.
What happens when the Sun no longer have gravitational force, as in the force that pulls the 8 planets? And why?
2.
On the table there are alot of small pieces of paper.
When you rub a ruler until it's hot, and put the ruler near the pieces of paper, why some paper will stick onto the ruler, and some paper will just like get moved a bit?
TIA!
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1. got 2 competing theories i believe. one is that, instantly, the earth and the 8 planets go off on a tangent. newtons theoryOriginally posted by wishboy:1.
What happens when the Sun no longer have gravitational force, as in the force that pulls the 8 planets? And why?
2.
On the table there are alot of small pieces of paper.
When you rub a ruler until it's hot, and put the ruler near the pieces of paper, why some paper will stick onto the ruler, and some paper will just like get moved a bit?
TIA!
however, if you think about it, since light from sun goes to earth in 8 mins, and nothing is faster than light, if the sun disappears, wouldnt it take 8 mins before the earth dislodges from the circular motion? einstein's theory.
2. static electricity -
thanksOriginally posted by unclebutcher:1. got 2 competing theories i believe. one is that, instantly, the earth and the 8 planets go off on a tangent. newtons theory
however, if you think about it, since light from sun goes to earth in 8 mins, and nothing is faster than light, if the sun disappears, wouldnt it take 8 mins before the earth dislodges from the circular motion? einstein's theory.
2. static electricity
err... but y the planets will go off in random directions? -
random meh? orbit whatOriginally posted by wishboy:thanks
err... but y the planets will go off in random directions? -
orbit is when there's Sun gravitation pull mah..Originally posted by tut4nkh4m3n:random meh? orbit what
I think without the sun, it'll go out of orbit and travel is a curve like those you see in soccer. -
no it will go off in a tangent to its original path. e.g.Originally posted by wishboy:thanks
err... but y the planets will go off in random directions?
at the point where the sun stops pulling on earth, the planet will go off on a straight line -
EDIT: ok i saw the above post after i replied
ok thanks alot! -
Ah uncle.. Do you mind I clarify something with you?
If the Sun disappears at an instance, because the Earth is still (self)spinning at the point where the gravitational effect is gone. Because the presence the spinning motion of the Earth, it'll not go straight. Like I say, I think it'll be like a ball traveling in a curve (not straight). -
You is talking the Banana effect? The Banana effect only applies in FLUIDS.Originally posted by Darkness_hacker99:Ah uncle.. Do you mind I clarify something with you?
If the Sun disappears at an instance, because the Earth is still (self)spinning at the point where the gravitational effect is gone. Because the presence the spinning motion of the Earth, it'll not go straight. Like I say, I think it'll be like a ball traveling in a curve (not straight).
Space is vaccum. -
I believe you are referring to projectile motion. It does not matter whether it is fluid or vaccum. It happens on earth because of the earth's gravitational pull. If there's no external force on the object, it will continue to move in the tangent at the point where the force is lost.Originally posted by SBS3625D:You is talking the Banana effect? The Banana effect only applies in FLUIDS.
Space is vaccum.
Uncle, the Einstein's theory is interesting. Have to admit didn't read that before, but makes sense that it comes from the originator of relativity. -
Watch this to understand more about the space-time curvature
http://www.youtube.com/watch?v=0rocNtnD-yI&feature=related -
Originally posted by ultranova3:Watch this to understand more about the space-time curvature
http://www.youtube.com/watch?v=0rocNtnD-yI&feature=related -
Yah, but if there's no external force and the earth is spinning, then the path will not be curved.Originally posted by eagle:I believe you are referring to projectile motion. It does not matter whether it is fluid or vaccum. It happens on earth because of the earth's gravitational pull. If there's no external force on the object, it will continue to move in the tangent at the point where the force is lost.
Uncle, the Einstein's theory is interesting. Have to admit didn't read that before, but makes sense that it comes from the originator of relativity.
In that case, then the medium we have to take into account.