
Answer:
m = 300668.9 kg
Lâ = 12.47 m
Explanation:
The relativistic mass of the space vehicle is given by the following formula:
[tex]m = \frac{m_{0}}{\sqrt{1-\frac{v^{2} }{c^{2}} } }[/tex]
where,
m = relativistic mass = ?
mâ = rest mass = 150000 kg
v = relative speed = 2.6 x 10⸠m/s
c = speed of light = 3 x 10⸠m/s
Therefore
[tex]m = \frac{150000kg}{\sqrt{1-\frac{(2.6 x 10^{8}m/s)^{2} }{(3 x 10^{8}m/s)^{2}} } }[/tex]
m = 300668.9 kg
Now, for rest length of vehicle:
L = Lââ(1 - v²/c²)
where,
L = Relative Length of Vehicle = 25 m
Lâ = Rest Length of Vehicle = ?
Therefore,
25 m = Lââ[1 - (2.6 x 10⸠m/s)²/(3 x 10⸠m/s)²]
Lâ = (25 m)(0.499)
Lâ = 12.47 m