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

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[问答题]
A wheel of mass M has ralbyfj0/ 9ugt4)pc qpfw +z4 d+d bka4,r x 6kk,rmwk0j6ius R. It is standing vertically on the floor, and we want to exert a horizontal force F at its axle so that it will climb a step against which it rests (Fig. 84 krwr jk,,a60xbmk 6k–55). The step has height h, where h

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