[填空题]
A potter is shaping a bowl on a potter’s wheel rotatingy0u cp, g7((.rw8xgr7a ldupw at constant angular sjfjn k 6m6s7n sww)q.(peed (Fig. 8–42). The friction forcjjn) 6mwq wfk( .n6ss7e between 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
