gc textbook chapter 8 Rotational Motion (id: dc753f418)

admin

本题目来源于试卷: gc textbook chapter 8 Rotational Motion，类别为 unclassified

[填空题]
A potter is shaping a bowl on a potter’s wheel rotating at co1/og4.r 3o(gi /he cg 6ouhz:,pmwm qubn zr) o4*emtbg.7b-d nstant angular speed (Fig. 8–42). The friction for*t7 .zeb bd4onm) -bgrce 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

参考答案:
空格1: 0.09±2%  空格2: 12±2% 


本题详细解析:

微信扫一扫，阅读更方便