[填空题]
Suppose a 55-kg person standshpzq pjtj/: dy6o3 n:) at the edge of a 6.5-m diameter y )q kf-pnj*w,merry-go-round turntable that is mounted on frictionless bearings and has a moment of inertia of 1700w )-y* fk,jpqn $kg \cdot m^2$ 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. $rad/s$