Phil, or whoever... one other thing before I give up for the evening... the moment of inertia is found as mr^2 ..... I dont suppose that means in our reference key that we can substitute Mrk^2 for Ik does it ? RicB -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html http://www.hf.uib.no/grieg/personer/cv_RB.html
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