- #1
FaraDazed
- 347
- 2
I was not too sure if this was the correct forum, so feel free to move if needed.
1. Homework Statement
A spaceship is measured to be exactly 1/3 of its proper length.
(a) What is the speed parameter β of the spaceship relative to the observer's frame?
(b) By what integer factor do the spaceship's clocks run slow, compared to clocks in
the observer's frame?
[itex]
L=\frac{L_0}{\gamma} \\
t=\frac{t_0}{\gamma} \\
\gamma = \frac{1}{\sqrt{1-\beta^2}} \\
\beta = \frac{v}{c}
[/itex]
For A i did:
[tex]
L=L_0 \sqrt{1-\beta^2} \\
\frac{L_0}{3}=L_0 \sqrt{1-\beta^2} \\
\frac{1}{3}= \sqrt{1-\beta^2} \\
\frac{1}{9}=1-\beta^2 \\
-\frac{8}{9}=- \beta^2 \\
\frac{8}{9}=\beta^2 \\
\beta = \sqrt{\frac{8}{9}}
[/tex]
I am not to sure that is correct. But for part B I was stuck but during typing this up managed to get an integer answer so hopefully it is correct.
[tex]
t=\frac{t_0}{\sqrt{1-\beta^2}} \\
\frac{t}{t_0}=\frac{1}{\sqrt{1-\beta^2}} \\
\frac{t}{t_0}=\frac{1}{\sqrt{1-\frac{8}{9}}} \\
\frac{t}{t_0}=\frac{1}{\frac{1}{3}} =3 \\
[/tex]
Would appreciate any help/advice/feedback, thanks :)
1. Homework Statement
A spaceship is measured to be exactly 1/3 of its proper length.
(a) What is the speed parameter β of the spaceship relative to the observer's frame?
(b) By what integer factor do the spaceship's clocks run slow, compared to clocks in
the observer's frame?
Homework Equations
[itex]
L=\frac{L_0}{\gamma} \\
t=\frac{t_0}{\gamma} \\
\gamma = \frac{1}{\sqrt{1-\beta^2}} \\
\beta = \frac{v}{c}
[/itex]
The Attempt at a Solution
For A i did:
[tex]
L=L_0 \sqrt{1-\beta^2} \\
\frac{L_0}{3}=L_0 \sqrt{1-\beta^2} \\
\frac{1}{3}= \sqrt{1-\beta^2} \\
\frac{1}{9}=1-\beta^2 \\
-\frac{8}{9}=- \beta^2 \\
\frac{8}{9}=\beta^2 \\
\beta = \sqrt{\frac{8}{9}}
[/tex]
I am not to sure that is correct. But for part B I was stuck but during typing this up managed to get an integer answer so hopefully it is correct.
[tex]
t=\frac{t_0}{\sqrt{1-\beta^2}} \\
\frac{t}{t_0}=\frac{1}{\sqrt{1-\beta^2}} \\
\frac{t}{t_0}=\frac{1}{\sqrt{1-\frac{8}{9}}} \\
\frac{t}{t_0}=\frac{1}{\frac{1}{3}} =3 \\
[/tex]
Would appreciate any help/advice/feedback, thanks :)