2007-07-20 00:23:45 · 9 answers · asked by Angellina4ever 1 in Science & Mathematics ➔ Physics
♦ m=m0/√(1-(v/c)^2) =∞; in India it will be 1 time larger!
2007-07-20 00:45:00 · answer #1 · answered by Anonymous · 0⤊ 1⤋
Or: Because the energy to accelerate an infinite mass would itself be infinite and not possible, the only object that can physically travel at the speed of light would have zero mass, i.e. a photon.
So:
Physically m = 0
Relativistically m = infinity
2007-07-20 07:45:23 · answer #2 · answered by carrotfingers 1 · 0⤊ 0⤋
If a spacecraft is travelling close to the speed of light, say, 240,000km/s, then its energy gets converted to mass and is considerably higher than it was when it was at rest.(E=mc^2)
Now, according to the theory of Relativity, time appears to slow down for the astronaut inside the spacecraft to an outside observer(who is stationary in relation to the spacecraft) so naturally mass must increase for the astronaut&spacecraft from the point of view of the outside observer.
So, [according to my point of view]mass must become infinite at the velocity of light for the observer but it may not be true for the astronaut inside the spacecraft!
2007-07-20 11:41:30 · answer #3 · answered by vasudev309 2 · 0⤊ 1⤋
Infinite.
It is a consequence of Relativity, which links several physical aspects together: contraction of space, dilatation of time, increase of mass.
One way of looking at it is that all the energy used up to accelerate an object has to be equivalent to a mass, since E=mc^2.
2007-07-20 07:30:08 · answer #4 · answered by Vincent G 7 · 1⤊ 0⤋
the mass can only be zero. its is not possible for an object with mass to move at the speed of light, as it would require infinite energy.
2007-07-20 07:45:36 · answer #5 · answered by mrzwink 7 · 0⤊ 0⤋
Mass has nothing to do with velocity. Weight has relation with gravitational forces and gravitational forces has relation with velocity (of earth for us) and mass. Weight on earth is different from weight on moon or mars, but mass - remains the same. Mass has relation with atomic and subatomic particles, - Protons, Neutrons, Electrons, Photons, etc.
If the energy for movement is not consumed from the mass of the body, it will not be changed. If it is consumed from the body it will reduce according to equation E = mc2, in proportion of energy consumed and square of velocity of light.
2007-07-20 08:03:57 · answer #6 · answered by Abhijit Purohit 4 · 0⤊ 2⤋
The only 'particle' that moves at the speed of light is the photon, and it has zero rest mass.
2007-07-21 01:32:19 · answer #7 · answered by Frank N 7 · 0⤊ 0⤋
mass will be infinite.
The speed of light theoretically can never be fully attained, and as you approach it, your mass grows- E=MC^2
2007-07-20 07:52:42 · answer #8 · answered by Anonymous · 0⤊ 0⤋
please can all of you out there understand that E=mc^2 ONLY IF p=0 !!! you really do all need to do some basic phyics!
2007-07-20 08:25:18 · answer #9 · answered by Professional Physicist 3 · 1⤊ 0⤋