Acc to theory of relativity mass of object will become zero if that travels with speed of light?

Acc to theory of relativity mass of object will become zero if that travels with speed of light or mass decreases if its speed nears speed of light,how can mass decrease,mean how can number of atoms or molecules(i.e. the mass) decrease in an object?|||No, according to relativity, the relativistic mass of an object would become infinite if it traveled at the speed of light.


That is a tiny bit more than zero.|||No, it does the opposite. It increases to infinity. That is why it is impossible for something with rest mass to accelerate to the speed of light; it would take an infinite amount of energy.





It's not that the number of atoms changes. There are two different kinds of mass. Rest mass (the kind you usually experience) and mass due to kinetic energy (which is not apparent except at high speeds. You are likely familiar with Einstein's Equation:





E=mc^2





This includes both types of mass. As the kinetic energy increases, the mass attributable to that kinetic energy increases, even though the atoms themselves still have the same rest mass.





You can learn more here: http://en.wikipedia.org/wiki/Mass-energy…|||HEY NICE THOUGHT AND QUESTION ALSO,





LOOK, YOUR QUESTIONS ANSWER IS TOTALLY DEPENDS ON THE TERM "CONTROL VOLUME".


WHAT IS CONTROL VOLUME?


IT IS FIX VOLUME OF SPACE WHICH CONTAINS FIX QUANTITY OF MASS.


NOW RETURN TO UR QUESTION, LET U HAVE THROWN IDEALLY OBJECT WITH MASS "m" kg IN THE SPACE WITH VELOCITY OF LIGHT.


NOW IF U TAKE CONTROL VOLUME AS OBJECT THEN UR ASSUMPTION IS TOTALLY RIGHT BUT THE MASS CAN NOT BE ZERO IN THAT SYSTEM.


NOW IF U TAKE CONTROL VOLUME AS WHOLE SPACE WITHIN THAT OBJECT THEN UR PREDICTION IS TOTALLY WRONG. WHAT HAPPENS ACTUALLY ENERGY CONTAINS SMALL PACKET OF PHOTON ENERGY, WHICH HAS TINY MASS. SO WHOLE OBJECT IS CONVERTED IN TO ENERGY, BUT WE CAN NOT NEGLECT ENERGY AS SYSTEM WHICH HAS NO MASS...!!!!! SO


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