Question

According to Einstein theory when object moves with speed of light mass increases what's the reason plz don't proof it by formula give reason???

Answer 1

Let’s just break this down a bit. The formula you’re referring to states effectively that as kinetic energy increases due to increasing velocity it (the velocity) hits a limit.

Explanation:

The velocity is limited by the universe’s speed limit, the speed of light. This is one of the fundamental postulates underpinning relativity. So what happens as an object’s velocity increases through being given a set amount of energy per second?

It gets harder and harder to increase its speed (it’s approaching the limit) and objects whose speed is hard to alter are more massive than those whose velocity is easy to alter (the property of mass we call inertia.) Thus we see that an electron travelling at 99.9% the speed of light (not so unusual) has a mass equivalent to 20 x the mass of an electron at rest.

In summary, there is no limit to momentum (the product of velocity and mass) or kinetic energy, but as there is a limit to velocity, the mass must increase.

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