What's the balance point of a balanced strung racquet?

[bigredlemon]

What's the balance point of a unstrung balanced racquet? I'm guessing strings weigh about 5g (right?) so a strung racquet would add an extra 4mm.

Btw, when talking about balance points of racquets, is this with an unstrung racquet or strung?

[kwun]

unstrung. different strings weighs differently.

the same string by different stringers will weigh differently on the same racket.

higher tension stresses the string more and will weigh (marginally) less than lower tension with the same string.

etc... :)