[填空题]
What is the angular momez/h8uqz9jnilnmh;w8a: 5 7pg/m or4 entum of a 0.210-kg ball rotatqqf)bfff 5 ;pt njetw+m*/r*v(9x xa-ing on the end of a thin string inj 9*t(*-tqabqxx5f/ fvffew mp ;)+r n a circle of radius 1.10 m at an angular speed of 10.4 $rad/s$? $kg \cdot m^2$