Originally Posted By: paul
Quote:
-Unless acted upon by a net external force, a body, at rest, will remain at rest and a body, in motion, will remain in motion.


the pipe is itself a body.
if you are or are not capable of understanding that is your problem.


We all agree it is a body - but note you need an external force. Whether you're talking about a tank of air, a gun, or guys running up & down ladders, all of those forces are internal

Originally Posted By: paul
I have clearly shown all the possible forces involved and according to the forces


No, you've steadfastly ignored newtons laws, in particular newtons 3rd law.

Bryan
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