[填空题]
Suppose a 55-kg person sta2*wv :.bvaba:vhtd4j79 9v y;lyqk t znds at the edg+i r6apbx9iz 6e of a 6.5-m diameter merry-go-round turntable thatbx za6i ri9p+6 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. $rad/s$