[填空题]
Suppose a 55-kg person stands at the edge of a 6.5-m dibirq o xbn71m /7x3jcmtc;1u7ameter merry-g50 klrko*7x t2g l/vqmo-round turntab txkk*lm05q7rlog 2v/ le 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. $rad/s$