[填空题]
A uniform disk turns avl-epn07v 1r*2o e ffyl1l sg w09vvq9bi+qk1t 2.4 b *dvvkr80i;nrfh c474e /7 cti4v qpm$rev/s$ around a frictionless spindle. A nonrotating rod, of the same mass as the disk and length equal to the disk’s diameter, is dropped onto the freely spinning disk, Fig. 8–49. They then both turn around the spindle with their centers superposed. What is the angular frequency in rev/s of the combination? $rev/s$