[填空题]
(a) What is the angular momentum of a 2.8-kg unifox-sx i)d2+i*p.rb lnqrm cylindricadb -wwkdtbcd6; ay-zr8:k 2-x l grinding wheel of radius 18 cm when rotating at 150d8brwa6x-- ;t2wd dkc- :byzk0 rpm? $kg \cdot m^2$ (b) How much torque is required to stop it in 6.0 s? $m \cdot N$
Post time 2025-2-18 20:00:22
