[填空题]
Suppose a 55-kg person stands at the edgp x+xy .b 0::kitx/mrne of a 6.5-m diameter merry-go-round turrkt 0ix+ynxb x::/pm. ndt7. 5x7op(quie1 afxu5(* 6abae jz ntable that is mounted on frictionless bearings and has a moment o6qebx.ap a(1d5i7oj57(ft*uau xze nf inertia of 1700 $kg \cdot m^2$ The turntable is at rest initially, but when the person begins running at a speed of 3.8 $m/s$ (with respect to the turntable) around its edge, the turntable begins to rotate in the opposite direction. Calculate the angular velocity of the turntable. $rad/s$
