[填空题]
What is the angular mome m1 l*auixrj(eb4c/+entum of a89o6f2a1 dmj1ie7ikv3 o0ocg)vj lt e 0.210-kg ball rotating on the end of a thin string 9kjdl m6j7f i g 3ec)o01a2vtio81eo vin a circle of radius 1.10 m at an angular speed of 10.4 $rad/s$? $kg \cdot m^2$