gc textbook chapter 8 Rotational Motion (id: a29dc99a7)

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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 the end of a thin, light rod is rotatedpgnl zp3uj0)f20 4lwrb4 y(tp4 ls, 9oj(t5j8l*qn+:gn clz1u(q emisq a0vg in a horizontal circle of radius 1.2 m. Calcula4 qj8l:elq(9+injq ms5su,vtno (gczl* 0g1ate
(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% 


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