[填空题]
Suppose a 55-kg person stands at the ed7+nl -w9wq10 )vztdyzj xsej: ge of a 6.5-m di8jkxpq) :s l*kameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of i*sxk) l:jp8qk nertia 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. $rad/s$