[填空题]
A potter’s wheel is rotating around a vertical axis through its center s1 9(a aajo1aoaa x p,x 6ma k03.-ykds3dnkz(lt a frequency of 1.5rev/s The wheel can be considered a uniform disk of mass 5.0 kg and diameter 0.40 m. Th3d6l0skdk k a,amx.nyz - x(p3e potter then throws a 3.1-kg chunk of clay, approximately shaped as a flat disk of radius 8.0 cm, onto the center of the rotating wheel. What is the frequency of the wheel after the clay sticks to it? $rev/s$