In other words .
The mass of bulkier golf club heads is distributed further away from the hosel and shaft , the moment of inertia about the shaft is increased mak ing it harder it is to rotate the golf club head about the shaft
In other words , because the mass of bulkier golf club heads is distributed further away from the hosel and shaft , the moment of inertia about the shaft is increased mak ing it harder it is to rotate the golf club head about the shaft