Plasma Attempt #2

[Robin Hewitt]

Wait what... I thought this tube was spinning?

This is the difference between maths and arithmetic. I happily put all the mass on the outside diameter, assume 10g is twice the weight of 16g and overestimate the inertia somewhat.

You work to three decimal places and we disagree

Incidentally, what thickness are you using for gauge? Once you get past tiny the OD goes up in multiples of 1/8". People like tubing to fit snug one inside another so the wall thickness is usually 1/16" for 16g and 1/8" for 10g.

My 4 x 4 * 10g box section has a 1/8" wall, I just measured it.