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Effect of Relativity on Gravitation

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I wonder, If we take atoms travelling with speeds close to that of light, there will be an increase in mass (according to the theory of [wiki]relativity[/wiki]).  As the mass increases, the gravitational force should also increase.  Will this increase in [wiki]gravity [/wiki]affect the surrounding space?

If an atoms travels with 99% the speed of light, what will be its increase in mass?

(The question was reformatted to suit the language)

I must congratulate you first for thinking deep and differently.

The relativistic increase in mass is given by the equation $m=\frac{m_{0}}{\sqrt{1-\frac{v^{2}}{c^{2}}}}$

The increase in mass increases the gravity, but the force of gravity is governed by the value of the universal constant of gravitaton, which is very low (6.67 x 10-11).

For the second part of your question, the increase in mass can be calculated to be about 7 times from the equation mentioned above.

(Please post your further doubts on this topic as comment to this post so that all related ideas come together.)