一位右手高尔夫球手以平面运动挥动高尔夫球杆（下图）。已知高尔夫球的初速度 (v)、手臂长度和球杆长度，球接触点时左肩的角速度是多少？假设左臂和球杆形成一条直线，且球的初速度与击球时球杆头的线速度相同。注意：必须提供国际单位制 (SI) 单位符号，并四舍五入到三位有效数字。数值题

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