Adds lead to the handle and computes the new balance point and weight via mass-weighted centre of mass.
Lead added
8 g
28 cm tape
New weight
372 g
+8 g
New balance
263.7 mm
−4.3 mm
Formula: B_new = (M·B + m·d) / (M + m). Lead mass m = (strip length × strips) / density, placed with its centre at distance d from the butt. Racket length assumed 455 mm.