IIT JEE , AIEEE Forum - Physics , Mechanics - theory of masss [admin]: for body travelling at speed of light

kushal

usually we say that when mass travells with very high speed it looses its mass but according 2 theory of relativityi.e

M=m/

(1-v*v/c*c)

M-relative maas

m-const.mass

v-velocity of body

c-velocity of light

so when body travells with speed of light M REACHES 2 infinity.here there is huge increase in mass which contradicts the above statement .so plz explain the physics behind it

cvramana

The formula M = m₀ /

(1 - (v² / c²)) is not applicable for photons which move with the speed of light, that is v = c. And there is no particle, which can move with the speed of light. This statement also is a part of the theory of relativity. Therefore the mass becoming infinity is ruled out.

gorakavipraveen

Hi friends.
Kushal it was exciting question. However cvramana, I hope that the question was like this, if a particle reaches speed nearer to speed of light, then what exactly happens to its mass wrt mass at rest.
Kushal, I suppose both can happen innacoradance with what we are dealing for. For macroscopic particles i thin the first one take place and microscopic mass increases. Note that the funda behind my talk is in accordance to uncertainity with dual nature of particles at such high velocity. Fundamental particles, photos obey for uncertainity. To consider majour difference in position, we can suppose that mass increases and decreases in the conditions wrt to what we apply the theorm for.
Ask if i am not clear in explaining you
regards

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