[填空题]
Suppose a 55-kg person stands at the edge of a 6.5-m d*6mm+q9 tt :f3poa-cg aa s(1;omu lofiameter merry-go-roun,; o;vlgnjt 8v6 z+jlbw- xifh8j-r *ld turntable that is mounted on frictionless bearings and has a moment of inertia oj,lvljvhw t-z+; g*6; 8 x-rlobjfi8nf 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. $rad/s$