[填空题]
Suppose a 55-kg pers*p*2+ qy4tw1rpopmpfo/oa x3ut to. ahby0c*pj8:g:z n stands at the edge of a 6.5-m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of inertia of 1700htga3u.oy:x8acbj: to p*0z/ $kg \cdot m^2$ 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. $rad/s$