[填空题]
What is the angular momentum of a 0. y3 nv2kfw6xc4210-kg ball rotating on the end of a thin quypt(xk.1rt lu0bhcq- h:kt +8:jmk546eh y stringuj0bqpk84k m6 ( u:th.:tc5h-rke+1 yxyltq h in a circle of radius 1.10 m at an angular speed of 10.4 $rad/s$? $kg \cdot m^2$