[填空题]
A potter is shaping a bowl-csgxz7wbr+ g;/gpii72l1x r on ab0 6rfzc v:u2etm0. bmo(l n6a potter’s wheel rotating at constant angular speed (Fig. 8–42). The friction fon0lt6:o c(aef .bzm v6 u20mrbrce 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
