Common queries related to theory of relativity-1

Q1. Who proposed the theory of relativity?
Ans: Albert Einstein.

Q2. What is the difference between general theory of relativity and special theory of relativity?
Ans: General Theory of relativity: This theory deals with the the accelerated objects.
Special theory of relativity: This theory of relativity deals with the non-accelerated objects.
Out of the above two, the special theory of relativity is easier to understand because it deals with the non-accelerated objects. Continue reading “Common queries related to theory of relativity-1”

Variation of mass with velocity and its derivation

Do you know that there is variation of mass with velocity in relativity that is mass varies with the velocity when the velocity is comparable with the velocity of the light. Let us derive and discuss the variation of mass with the velocity relation:

Let there are two inertial frames of references S and S1. S is the stationary frame of reference and S’ is the moving frame of reference. At time t=t’=0 that is in the start, they are at the same position that is Observers O and O’ coincides. After that S’ frame starts moving with a uniform velocity v along x axis.


Suppose there are two particles moving in opposite direction in frame S’. velocity of particle A will be u’ and of B will be –u’ according to the observer O’. Continue reading “Variation of mass with velocity and its derivation”

The concept of Relativity and frames of reference

The concept of Relativity and frames of reference:

The term relativity comes from the word “relative that is in relation”. In this universe, everything is relative, there is nothing like absolute rest. If you think that you are sitting somewhere and you are in the state of rest, then my dear you are wrong. You are also in the state of motion, because if someone is able to see you from outside the earth (suppose from moon), then you are also moving. Therefore, everything is relative.

Here question arises with respect to which we can study the motion of another object? This problem is solved with the concept of frame of reference.

Definition: The frame of reference is defined as any coordinate system with respect to which one can study the motion of the another object. For example, a bus can be a frame of reference with respect to which one can study the motion of another object.

Types of the frame of reference: Continue reading “The concept of Relativity and frames of reference”