[填空题]
A potter is shaping a bowl one4 bfo 9( ih85ebtbisv f9 o5-t: d0x-tyu.xqp a potter’s wheu)r0x0s hk5uq1rq z *rel rotating at constant angular speed (Fig. 8–42). The friction fuk1rrs0xqr5q)z u0 h *orce 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
