I remember seeing that movie years ago when I was looking for a Science Fair project, I think it's still in my IE favorites... But it is a great website to go to and watch all the videos.
For there to be an increase in kinetic energy there needs to be an decrease in potential energy. let's assume there is one accessory ball attached to the magnet and one firing ball that is attached to the accessory ball. o --> Ioo (init) /// (finally). To begin the explanation one needs to know a bit about magnets. The greater the attraction (the closer an object is) to the magnet the more NEGATIVE its potential energy is and the force exponentially rises as the ball comes closer to the magnet. So that means there are two sources of negative potential energy in the first example- the accessory ball (with the biggest negative potential energy= -U) and the firing ball (with a smaller negative potential energy= -u). Also the target ball that has initial kinetic energy (=K sub i) is moving. The Equation for the initial state is E(i)= k(i)-U-u. In state two after the ball has collided there is a different arrangement of energy. Now there are two balls attached to the magnet. Notice these two balls share the same negative potential energy as the accessory ball in state 1 (in fact the accessory ball stayed there). Thus all the potential energy is -U-U or -2U. And of course we see that the final kinetic energy is bigger K(i) < K(f). So the final state is like this E(f)= -2U+K(f).There is not much energy lost to friction so can assume heat loss is negligible and that we can use the law of conservation of energy (E(i)=E(f)) when doing this >>> K(i)-U-u = K(f) -2U
This is the basic premise of accelerometers, except they are electrically magnetized in a vacuum that is 10 miles in diameter and instead of marbles there are small tiny particles (less then an atom). The funny thing is that at speed close to the speed of light, instead of gaining more speed it gains more mass! CRAZY huh! So its not really the conservation of mass or energy theorem, its both combine (conservation of mass and energy theorem).
asranielApr 30, 2006
perpetum mobile? or how the name realy is.. wouldnt it be possible anyhow with that?
crexorApr 30, 2006
...4 ball bearings(touching)...2 strong magnets...1 ball bearing (approximately 2-3 inches away from the magnets)...that simple
Closed AccountApr 30, 2006
Digg from me for that for sure!Nice!
wolfkeeperMay 1, 2006
More to the point, where does the momentum come from?
alphaprimeMay 1, 2006
I remember seeing that movie years ago when I was looking for a Science Fair project, I think it's still in my IE favorites... But it is a great website to go to and watch all the videos.
swiftedgJun 1, 2006
For there to be an increase in kinetic energy there needs to be an decrease in potential energy. let's assume there is one accessory ball attached to the magnet and one firing ball that is attached to the accessory ball. o --> Ioo (init) /// (finally). To begin the explanation one needs to know a bit about magnets. The greater the attraction (the closer an object is) to the magnet the more NEGATIVE its potential energy is and the force exponentially rises as the ball comes closer to the magnet. So that means there are two sources of negative potential energy in the first example- the accessory ball (with the biggest negative potential energy= -U) and the firing ball (with a smaller negative potential energy= -u). Also the target ball that has initial kinetic energy (=K sub i) is moving. The Equation for the initial state is E(i)= k(i)-U-u. In state two after the ball has collided there is a different arrangement of energy. Now there are two balls attached to the magnet. Notice these two balls share the same negative potential energy as the accessory ball in state 1 (in fact the accessory ball stayed there). Thus all the potential energy is -U-U or -2U. And of course we see that the final kinetic energy is bigger K(i) < K(f). So the final state is like this E(f)= -2U+K(f).There is not much energy lost to friction so can assume heat loss is negligible and that we can use the law of conservation of energy (E(i)=E(f)) when doing this >>> K(i)-U-u = K(f) -2U
swiftedgJun 1, 2006
This is the basic premise of accelerometers, except they are electrically magnetized in a vacuum that is 10 miles in diameter and instead of marbles there are small tiny particles (less then an atom). The funny thing is that at speed close to the speed of light, instead of gaining more speed it gains more mass! CRAZY huh! So its not really the conservation of mass or energy theorem, its both combine (conservation of mass and energy theorem).