According to the Theory of Relativity, the Mass of an Object

Essay

According to the theory of relativity, the mass of an object at speed v is given by $m ( v ) = \frac { m _ { 0 } } { \sqrt { 1 - \frac { v ^ { 2 } } { c ^ { 2 } } } }$ where c is the speed of light and $m _ { 0 }$ is the mass of the object when it is at rest. Find $m ^ { \prime } ( v )$ .