| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a multi-piece golf ball with a solid core having a high spin decay rate and capable of extending a carry when hitting the ball of an initial spin rate, relatively high, from about 2,800 to 3,500 rpm with a number-1 wood. <P>SOLUTION: A multi-piece golf ball includes a solid core 10 having a specific gravity from about 1.2 to about 14; and a cover 30 disposed on the outside of the solid core, wherein a spin decay rate of the golf ball during flight is from about 3.1% to about 20% of an initial spin rate of the golf ball from about 2,800 to 3,500 rpm; and wherein a moment of inertia of the golf ball with respect to an x-axis Ix, a moment of inertia of the golf ball with respect to a y-axis Iy, and a moment of inertia of the golf ball with respect to a z-axis Iz are substantially the same, the x-axis, y-axis, and z-axis intersecting orthogonally at the center of the golf ball. <P>COPYRIGHT: (C)2011,JPO&INPIT |
