Okay, you DEFINITELY can't do it with your specs, then. I'd change the mass for 'Weight 1 Mass' until I got an answer in which both numbers are below the total length of the racquet.
Effective mass is, basically, how much weight the racquet uses when hitting the ball. At this point, the equation's totally buggered, but consistent, so I'd use it more for comparison purposes than anything else.
Recoilweight is how much the racquet recoils. Theoretically, you want less of this if you're a flat-hitter (the transfer of motion is direct; the way you swing the racquet plows without the need for recoilweight) and more if you're spinny (exact opposite).