hi this answer seems too simple to be true....

 

i reckon its

 

L/(1-v^2/c^2)^.5

 

and yeah i don't know what it means by "primary evemts occurring in this measurement"??

 

Thanks for you help ")

Sarah

The stationary observer sees the ends coincident with the clocks simultaneously, stick end A meets clock a, and stick end B meets clock b.

 

What does the moving observer see for ends A and B, and what do clocks a and b read at these times? (I think those are the primary events)

"L/(1-v^2/c^2)^.5"

 

was that right though?

"L/(1-v^2/c^2)^.5"

 

was that right though?

 

Yes, that's correct for the rest length.

But how did you calculate it ? That's the important part.