[填空题]
Suppose a 55-kg person stands at thegzalls . yqo-2c-9pd, edge oak5y4fwts rqehq 9qi. /9 s+pt mfo/,)f a 6.5-m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of iner s5/) f,met./s9pkqw toyi49q qha +rftia 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. $rad/s$