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Finding the Speed of an electron

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The rest mass of an electron is  9.11x10^(-31) kg.  When the electron is in motion its mass becomes 15.2x10^(-31) kg. Find the speed of the electron.

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This solution explains the problems of finding the speed of an electron.  The solution is given in detail.       
 This is mainly for solving the problem on special theory of relativity.  

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Theory of Relativity (1)
By:- Thokchom Sarojkumar Sinha

The rest mass of an electron is
kg.
When the electron is in motion its mass becomes
kg.
Find the speed of the electron.

Solution:- Let be the rest mass of an electron and m be the mass of the electron when it is moving with velocity u.
Therefore,
...

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  • BSc, Manipur University
  • MSc, Kanpur University
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