gc textbook chapter 8 Rotational Motion (id: 6d240bc68)

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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]
Suppose David puts a 0.50-kg rock into ahvol, zh 3x ct-b6arq- x5ld/64o gr8ixqr;q. sling of length 1.5 m and begins whirling the rock in a nori g .;rqx48qearly horizontal circle above his head, accelerating it from rest to a rate of 120 rpm after 5.0 s. What is the torque required to achieve this feat, and where does the torque come from?    $m\cdot N$

参考答案: 2.8±2%


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