no because when it got half way through the earth the gravitational forces would be from all around so it would hover in the middle

by Anonymous 11 years ago

Not if it is traveling fast enough, it's velocity would be increasing, (with frictional force included) if it has constant acceleration, then it should end up traveling so fast by the time it gets to the core, it should go right through and if it doesn't make it to the other end, it'll just end up creating a beam traveling back and forth getting faster and faster until it eventually pops out the other side.

by Anonymous 11 years ago

wrong, since it would accelerate at 9.8m/s^2 initially, and then as it fell would acelerate at less and less of a rate, or we could say, it's jerk (i.e. the derivitive of acceleration) would be a negative value. Thus the rate of acceleration would be decreasing. When it finally reach the core it would be pulled in all directions by gravity which would cause it to effectivly cancel. It would then continue past the core, this time decceleration with a positive jerk value. This means it would be deccelerating at a higher and higher rate. Now it the absence of ALL friction it could hypothetically come out the other side of the earth at the velocity that it entered at, like that of a ball thrown upwards at 10m/s will be moving at -10m/s when it reaches the point it was thrown at (again in absence of friction). The friction, however, would be extremly great seeing as it would be moving through rock and dirt, and sometimes it would come to a complete stop. This is also assuming whatever the lightsaber burns turns into nothing. Therefore, this situation is completely imposible, even assume lightsabers exist.

by Anonymous 11 years ago

I'm sorry, but for a lightsaber, dirt and rocks would be nothing. Besides the earth is made up of much denser material than that, as soon as you pass the crust. What are you, still in high school? And, considering friction, it would still end up going past the core and if it doesn't in fact make it to the other side, then it would just sling shot back to where it came from and THEN it would sling shot back into earth with even greater velocity (and this time also without friction, since the hole is there (not taking the earth's rotation into account, because it's so infinitesimal)), thus coming out on the other side. And even if it doesn't happen on the first or second try, it would eventually get to it.So You obviously don't know about perpetual motion. http://www.youtube.com/watch?v=287qd4uI7-E

by Anonymous 11 years ago

are you trolling, or are you just that stupid?

by Anonymous 11 years ago

Partially yes, but anyway, my theory is way more probable than yours. To be realistic, the lightsaber would just bounce around and if it hasn't already, then the hilt would be gone by the time it gets to the mantle. Therefore the lightsaber would be no more by the time it gets anywhere near the mantle. But I used to be a TA for a physicist who has written about 5 books on gravity and what not, and we've had a discussion similar to this, so unless you're about say you know more than him, then I suggest you go back home.

by Anonymous 11 years ago

Ever tried rolling a ball on a halfpipe? Even though it goes back and forth, it never gains enough momentum to roll over the other side like you suggested, "then it would just sling shot back to where it came from and THEN it would sling shot back into earth with even greater velocity." This is probably the dumbest idea I've ever seen. A pendulum, for example, won't gain more momentum unless you apply a force to it, it will simply swing back and forth until it stops. The same applies to a lightsabar. Perpetual motion machines are impossible on earth because of friction, everything eventually comes to a stop. I don't care if you were a TA for a physicist, it doesn't look like you learned much anyway. And yes, I am in highschool, grade 11 to be exact. I'm not suggesting I know more than this physicist, but I do know more than you.

by Anonymous 11 years ago

You THINK you know more than me, but that doesn't actually mean you do. Anyway, I told you what would happen. The lightsaber would be destroyed by the time it gets to the mantle. So I think that ends things, even if you did know more than me, by taking an elementary physics course that is offered in your junior year (which I got an A in), you lack a great deal of common sense.

by Anonymous 11 years ago

I did realize that the lightsaber would probably be turned off or destroyed, but I assumed we were operating under the hypothetical that it would not be. I wanted to refute your utterly preposterous assertion that it would go: "back and forth getting faster and faster until it eventually pops out the other side." This is a ludicrous misunderstanding of simple physics and shows your incredible stupidity. If you think getting an A impresses me, let me tell you frankly that it doesn't.

by Anonymous 11 years ago

I don't care about impressing you, I'm just letting you know. I know what you know, plus a lot more. And there kind of is no hypothetical situation where it would not be, because if you changed the hilt, then it would no longer be the same thing. Anyway, you came on here to show that OP is wrong, if you truly had any knowledge of anything, you kinda would have pointed that out.

by Anonymous 11 years ago

when I first came on here I didn't really care and that was what I thought of first. My last few comments, however, were written mainly to refute your retarded counterargument.

by Anonymous 11 years ago

You've got such a sailor's mouth. Are you planning on joining the navy after high school? Because with your deductive reasoning abilities (or there lack of), anything more would be too strenuous for your small mind. You came here with your smug comment, telling why it wouldn't work. You applied real "physics" and real "thoughts" to a nonsensical post and then when you get called out on how illogical you really are, you resort to name calling. You're just a brat, who thinks he knows everything, because he can read. A 10 year old kid can read your dumb physics book and regurgitate it for me word for word. You think that'll get you anywhere? You think it'll get you anywhere fractionally tangible? Your narrow, grossly inaccurate, and self indulgent mindset diminishes your chances of actually doing anything productive with your life. Oh, but how I enjoyed reading your quasi logical responses... I think your comments may be the most accurate sample of any and all stupid comments left on the internet... EVER.

by Anonymous 11 years ago

that was beautifully done, I commend you (I mean it, well written). Saying retarded qualifies me for having a saliors mouth? You seem quite bitter at the moment. Is it because you realised how stupid your argument was but don't want to admit it? Because, you with your (I am assuming) university degree in physics, got destroyed in an argument on simple physics by a highschool kid? It's nice to see you've given up on attacking my argument now and are simply attacking me as person. As to you thinking that I'm just some geek that memorizes physics facts; do you really think there's anything in any book on the exact physics of a falling lightsaber? (if there are I haven't seen any). My first comment was not overly serious, I was just presenting an idea I had on it. Then you jumped on me with preposterous assertions and I had to argue back. Just because you lost an argument doesn't mean you have to sulk.

by Anonymous 11 years ago

Or a very good night

by Anonymous 11 years ago

It's a joke, you people explaining the physics are over analyzing it to the max. Just freakin go with it!

by Anonymous 11 years ago

over analyzing is fun

by Anonymous 11 years ago

Wouldn't the light saber deactivate if it got too far from the person using it?

by Anonymous 11 years ago

No....

by Anonymous 11 years ago

the button would probably be pressed though

by Anonymous 11 years ago