[填空题]
What is the angular momen8k3 ju:) p;tk9vfowk nwve:;t+ x,bx+cdlux(;,3wb erqh1c ( obj7iotum of a 0.210-kg ball rotating on the end of a thin string in a circle of radius 1.10 m at an anlw o(+diorb1 +, 3e:,j7t; bqhucwxxe b(; xcvgular speed of 10.4 $rad/s$? $kg \cdot m^2$