c-zeta formula

HOW TO CALCULATE C-ZETA c-zeta = SQRT ( 12 x 32.2 x d.coeff^2 ) / ( 4 x m.wheel x (spr.rate x 56) x lev.ratio^2 )

HOW TO REVERSE ENGINEER BV COMP FORCE (IN THIS EXAMPLE) GET          c-zeta from database Calculate  k.spring = spr.rate x 2.20462 x 25.4 x 12 Calculate  c.damp = ( c.zeta x lev.ratio . SQRT (4 x m.wheel x k.spring / 32.2) / 12 ) / 2 Calculate  bv force = ( vel x c.damp )