[填空题]
Suppose a 55-kg person stapxht24w;.0r b7ebwc 8;zxdwr ndsq +icqou6 e)q. at the edge of a 6.5-m diameter merry-go-round turntable that is mounted on fqqq+ciuo)e6 .rictionless 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. $rad/s$