[填空题]
A 2.30-m-long pole is ba20rtj2sm.zc3:e c-u ss+ fczylanced vertically on its tip. It starts to fa 4o6 0(l)vbcuj+b syayll 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? [Hint: Use conservation of energy. c+ulb6so4(b j0yv a)y] $m/s$
Post time 2025-2-18 20:00:22
