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

[问答题]
A wheel of mass M has radius R. It is standing vertically on the fligs/5dm4.nm. /ualjhoor, and ajw5)y,j4 gz ywe want to exert a horizontal force F at its axle so that it will climb a step ag 5y)4azwyg ,jjainst which it rests (Fig. 8–55). The step has height h, where h

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