Question

The velocity of a particle at which its mass is 5 times its rest mass:-​

Answer 1

The relativistic mass is given as m=

1−cv2m0

Where m 0

is the rest mass and v is the velocity of that particle.

Putting m=2m 0

and squaring both side we get

c2v 2 = 43

now taking square root of both side we get v=

2c23