Mass m and table ( how big Q I'm pushing )

[nicola]

http://3.bp.blogspot.com/-d-P219mnzkM/VA7NfcUiroI/AAAAAAAAB9g/q_NJrbt4UfM/s1600/CIMG3315.JPG

300 km/s respect to Earth = 330 or 270 km/s respect to Sun

how big foce will register table's leg ?

Symetry ? respect to what mass m is pushing pipe's wall ( how big friction left/right mass )

------------pipe----------------
m...dynamite...m
--------------------------------

http://youtu.be/HXKwNvA8VHs

 

[HallsofIvy]

I really have no idea what you are asking here. You have dynamite inside a pipe? Is the pipe the "table's leg" you are referring to? What possible relevance could speed with respect to the Earth (isn't the pipe or table on the earth) or with respect to the sun possibly have to do with this?