[填空题]
A potter is shaping a bqogr9cs q96qtn:s7 h-owl on a potter’s wheel rotating at constant angut9y2qkel3)6 j)ref; 6j(d wgz fs )jxilar speed (Fig. 8–42). The friction force betjeg)3e fw jzyj;frq)d6 2ti(k 6)9xlsween her hands and the clay is 1.5 N total. (a) How large is her torque on the wheel, if the diameter of the bowl is 12 cm? $m \cdot N$ (b) How long would it take for the potter’s wheel to stop if the only torque acting on it is due to the potter’s hand? The initial angular velocity of the wheel is 1.6 rev/s, and the moment of inertia of the wheel and the bowl is 0.11 $kg \cdot m^2$. s
Post time 2025-2-18 20:00:22
