Question

Determine the velocity at which a particle has to move so that the relativistic mass

of the particle is twice its rest mass?​

Answer 1

Explanation:

your ans is given in the above pic

Answer 2

ANSWER

The relativistic mass is given as m=

2

1−

c

2

v

2

m

0

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

c

2

v

2

=

4

3

now taking square root of both side we get v=

2

c

2

3