gc textbook chapter 8 Rotational Motion (id: a29dc99a7)

admin

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

[填空题]
A small 650-gram ball on tj8bf, g5v; z ,t1optwjhe end o (yjs rn,j24 tw2ay/n0pxtj*ah/ fg7bf a thin, light rod is rotated in a horizontal circle of h7 4ay( 2s/fw2jt j*b/nxjt,r y0pnagradius 1.2 m. Calculate
(a) the moment of inertia of the ball about the center of the circle,    $kg \cdot m^2$
(b) the torque needed to keep the ball rotating at constant angular velocity if air resistance exerts a force of 0.020 N on the ball. Ignore the rod’s moment of inertia and air resistance.    $m \cdot N$

参考答案:
空格1: 0.94±2%  空格2: 0.024±2% 


本题详细解析:

微信扫一扫，阅读更方便