RELATIVISTIC MASS

Have you ever wondered, What is Mass? What is the difference between Mass and Weight?

Well!! If you have, then you are in a treat.

Mass is the amount of force or energy required to make an object stop from it's motion or to make it travel in a uniform motion.

Mass is directly proportional to inertia. 

However, weight of an object is the force it generates due to the gravitational field created by the planet. And so weight of that same object can be different on different planets.

Now, is the amount of mass constant for an object throughout the universe?

Well! NO

Due to the equations formed by Einstein's relativity, Mass (amount of force/energy to stop it from it's motion) depends on the velocity of the material (derived from the Lorentz Transformation).

"The more the velocity, the heavier the object will be". Thus, it is impossible to make an object travel at the speed of light because when v tending to c ( speed of light), m will be tending to infinity by the equation presented above. 

However, on thinking the equation we can modify it by expanding the denominator term with the help of binomial expansion.

This can be applied to the modified equation of mass and we can see that the how mass changes as a function of velocity. The extra mass generated due to the motion is from the kinetic energy. thus we can relate the energy to the mass increased.

So, the increased mass is equal to the increase in kinetic energy divided by c square.

This gives us a better understanding of Mass itself.