[填空题]
(a) A yo-yo is made of two solid cylindrical disks, each ogydokf p m22/a0gph60xr, )ehf mass 0.0+1zmfyz fsbrzp dskl:1e 07 t72 3t(ald acc)750 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 the linear speed of the yo-yo when it reaches the end of its 1.0-m-lonz+sb)t 7a1f :as7lkc1d ztelr f70c3 dzp(m2yg 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
