[填空题]
A potter is shaping a bowl o ucd)bx8l(d;z n a potter’s whee6ro 7xcw):so kvb1h4i mk w16el rotating at constant angular speed (Fig. 8–42). The friction force between her hands and the clay is 1.5 bko6r46mkeh v:o w1csxw 17)iN 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
