"GROVER" wrote in message
oups.com...
Since I've been enjoying the topics and discussions of this news
group, and I see that there are many posters who are quite bright, I
decided to pose a question concerning the laws of physics to
stimulate the group's curiosity.

The question is: If you hang two plumb bobs, say 50 feet apart are the
strings parallel?

No way to answer this question without knowing your definition of
"parallel".

It is also somewhat site specific. There could easily be gravitational
and/or magnetic anomalies that will affect their positions much more than
the curvature of the earth.

So, the answer might be "pretty much".