[填空题]
Suppose a 55-kg person stands at the edge of a 6.5-m diameter merry-go-round q7+lvtyk1qny7l: .jy.ag n 6nturnq.tv.1 nyyj nl7a+7:6ky g lqqs3;ys gr )fy(ntable that is mounted on frictionless bearings and has a mo y;qsg)(fry3s ment 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. $rad/s$