[填空题]
A potter’s wheel is rotating around a vertical axis through its ;v2o*f- ko3rmjr*uqxm i/vx4centerd:jtr5:- * lxjyzi2c d at a frequency of 1.5rev/s The wheel can be considered a uniform disk of mass 5.0 kg and diameter 0.40 m. The potter then throws a 3.1-kg chunk of clay, approximately5x: i*ztd2-ycjd: rlj 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? $rev/s$