[填空题]
Suppose a 55-kg person nc6c tw2:y v*wstands at the edge of a 6.5-m diameter vexzp7 ,yb 8lh5eu 2-mmerry-go-round turntable that is mounted on frictionless bearings and has a moment of imb8u yxeve,5lz7- p 2hnertia 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. $rad/s$