[填空题]
A potter is shaping a fn wbay:fe)5w 4wbx094be0 pq42sor h bowl on a potter’s wheel rotating anbvmav cq(): 02ka(wb t constant angular speed (Fig. 8–42). The friction force between her hands and the clay is 1.5 N total(m:b b()cqa2wn0 vvak. (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
