[填空题]
Suppose a 55-kg person stanh35nshth3u )kds at the edge of a 6.5-m diameter merry-go-round tu(lck 79arm/oj:wbd5pmz e 9y*rntable that is mounted on frictionless bearings and has a moment of m * 9ocejw( r my/bdk95p:7zlainertia 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. $rad/s$