[填空题]
Suppose a 55-kg person stands(yk*dpmx q;1rkm1 ai( at t:.tcx2yui eekg 59wh,. g n4ruhe edge of a 6.5-m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of inert9 wxe u5tg,kueg.r.4ic hn:y 2ia 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. $rad/s$