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September 17, 2014

September 17, 2014

Posted by **Laurie** on Wednesday, October 24, 2012 at 5:07pm.

The length of the rod remains the same.

The length of the rod will decrease.

The length of the rod will increase.

Wouldn't the length double, thus being answer D?

- Physics -
**Elena**, Thursday, October 25, 2012 at 1:05pmIf your question is:

If a rod is moving at a velocity equal to 1/2 the speed of light parallel to its length, what will a stationary observer observe about its length?

The answer is

L=L₀sqrt{1-(v/c)²}=0.866L₀

The length of the rod will decrease.

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