Question concerning mass effect

[Asad Raza]

We know that the OBSERVED mass increases as the objects approach near to the speed of light. I was wondering that how does a stationary observer observe an increase in mass of an object which is traveling far away from it. I mean mass is a sensation, how it is observed by a stationary observer?

 

[weirdoguy]

We know that the OBSERVED mass increases as the objects approach near to the speed of light.

No, read this:
https://www.physicsforums.com/insights/what-is-relativistic-mass-and-why-it-is-not-used-much/