[填空题]
Suppose a 55-kg person stands at themt5 m t)l4bzghr1rov8m ,zu43bsk-m2 edge of a 6.5-m diameter merry-go-round hz e*6,+w n b*3z(wf cio;jlytturntable that is mounted otf 3w,ylh z*6nzio*+e(;cwjbn frictionless bearings and has a moment of 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. $rad/s$