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

[问答题]
A wheel of mass M has radius R. It smtx9w fc6 n./is standing vertically on th)sv :u ijxvvh,r; /qo-5j 2sz gkv0d8qe 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. 8–55). The step has height g,;vhvv ) j i0 8sq-o qsvk2zju/5rx:dh, where h

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