[填空题]
A 2.30-m-long pole is balanced vertically on its-6),f 3k;gix 1xcqokipd (lvo tip. It starts to fall xl7hmq6+vb 4r b71jf hand its lower end does not slip. What will be the speed of the upper end of the pole just before it hits the ground? 4vf1+ q xm6hrjb7l bh7[Hint: Use conservation of energy.] $m/s$
Post time 2025-2-18 20:00:22
