[填空题]
A potter’s wheel is rotating around a vertical axis1n 4zh-dhr*818ewty 3 xw xcxxv7 boex d)* 5ilfoqt2+through its center at a frequency of 1.5beft )+ * i27qolvo5dxrev/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, 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? $rev/s$