### Subject: How is the relativistic equation L_r=L_0/gamma derived?

Date: **Fri Mar 2 07:56:19 2001**

Posted by **Richard Lin**

Grade level: **7-9**
School: **No school entered.**

City: **Taipei** State/Province: **No state entered.**
Country: **Taiwan**

Area of science: **Physics**

ID: **983537779.Ph**

**Message:**

I understand how the relativistic equation t_r=t_o*gamma is derived, but I
don't know the mathematical proof of the equation L_r=L_0/gamma. Also, why does
a moving object's length contract?

Re: How is the relativistic equation L_r=L_0/gamma derived?

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