[填空题]
A 2.30-m-long pole is 98ftdob u.55e ie 4duibalanced vertically on its tip. g .tvrelw) rmmy5wht+lm;ad0o3m544 It starts to fall and its lower end does not slip. What will be the speed of the upper end of the pole just before it hits the ground? 4;w4+5)mtw hm0.yr3eagmtld5vl rm o [Hint: Use conservation of energy.] $m/s$
Post time 2025-2-18 20:00:22
