Q. The rest mass of a body is $m_{0},$ if it moves with a velocity of 0.6 c, then its relativistic mass is $m,$ then
A) $m < m_{0}$
B) $m = m_{0}$
C) $m > m_{0}$
D) None of these
Explanation
(c) $m = \frac{m_{0}}{\sqrt{1 - \frac{v^{2}}{c^{2}}}} = \frac{m_{0}}{\sqrt{1 - \frac{(0.6\ c)^{2}}{c^{2}}}} = \frac{m_{0}}{\sqrt{0.64}} = \frac{m_{0}}{0.8}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.