# Relativistic Mass

Written by Jerry Ratzlaff on . Posted in Relativity

Relativistic mass refers to the mass of a body which changes with the speed of the body as this speed approaches close to the speed of light.

### Relativistic Mass formula

$$\large{ m_r = \frac { m} { \sqrt { \frac {1 - v^2} {c^2} } } }$$

Where:

$$\large{ m_r }$$ = relativistic mass

$$\large{ m }$$ = mass at rest

$$\large{ c }$$ = speed of light

$$\large{ v }$$ = velocity

Tags: Equations for Mass