[填空题]
Suppose a 55-kg person stands at the edge ofo8o7ox7l9n bp a 6.5-m diametetm tqyc* c6q)9r merry-go-round turntable qq ctm9*t6yc)that is mounted on 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. $rad/s$