gc textbook chapter 8 Rotational Motion (id: 5edd6fe9f)

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

[问答题]
A wheel of mass M has radi2fii,i:cyrc : us R. It is standing vertically on the floor, and we 8ac+xon0xz7b twgb, 2 want to exert a horizontal for7+owa,zxn0x2tb c 8gb ce F at its axle so that it will climb a step against which it rests (Fig. 8–55). The step has height h, where h

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