What is the centrifugal force generated by a golf driver at 95, 110
and 115 mph.  The total weight of the driver is 10 oz., including head
and shaft.

You need more information. Are you asking about the tension induced at
the head/shaft interface? Are the speeds you provide orthogonal to the
swing radius? What is the swing radius? What is the length of the
shaft? (The swing radius & the shaft length aren't necessarily the
same; the player's arm length may contribute to the swing radius.) Are
the shaft & head made of the same material?

I am asking about the tension at the hands, where they grip the club
shaft. The length of the shaft (from the hands to the head)is 36", and
the length of the arms is 26", so the radius is 62". The speed is
orthogonal. The shaft and head are not made of the same material. The
head weighs about 7 oz., the shaft about 3 oz. the center of mass is
9" up the shaft from the clubhead.

I would like the centrifugal force at 120 mph instead of 115 mph.

For 120 mph, the force generated at the hands is 99.6 lb.
For 110 mph, 83.7 lb.
For 95 mph, 62.4 lb.

If m is the mass, r is the radius to the center of mass, and v is the
speed of the center of mass, the force is m v^2/r.