[填空题]
A 2.30-m-long pole is balanced vertihu98v cmzgo75cally on its tip. It starts mv p.3 ohwtzzu0: n(c0to 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 conservation of ene pm .3:00cvo wzunthz(rgy.] $m/s$
Post time 2025-2-18 20:00:22
