[填空题]
A 2.30-m-long pole is balance g uu0p 8ej-j/p9hocy7ne mzvy2xu zv5v0, k-(d vertically on its tip. It startc (wfaw2 vi c)fkkgls4)4+/ae s 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? [Hint: Use cci2 kw f4w/c f)(aa)4sgvle +konservation of energy.] $m/s$
Post time 2025-2-18 20:00:22
