[填空题]
(a) A yo-yo is made of tw.+v(yz7 z ss 0lli*rpawxv /4k+ 8ajtpo solid cylindrirwrjhu5h6sf:kuxx): q ( 0 zb+cal disks, each of mass 0.050 kg and diameter 0.075 m, joined by a (concentric) thin solid cylindrical hub of mass 0.0050 kg and diameter 0.010 m. Use conservation of energy to calculate theqw fhr:5kxsr:z0h )6u+ ux(jb linear speed of the yo-yo when it reaches the end of its 1.0-m-long string, if it is released from rest. $m/s$ (b) What fraction of its kinetic energy is rotational? %
Post time 2025-2-18 20:00:22
