[填空题]
Suppose a 55-kg person stands at the edge i*/vr oa pn.r2n:d6isof a 6.5-pgrcd*- 82s1 i jv(kepm diameter merry-go-round turntable that is mounted on frictionless bearings andek 1gpp8dijr(v c2* -s 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. $rad/s$