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

[问答题]
A wheel of mass M has radius R. (i6h/n rr+ euaIt is standing vertically on the floor, and we wh6in r u/+(aregzmr5z98bhl wajkb -.pn a7yx4 1j2l0ant 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 h, zb4.g 70w 1lya-jrz khpblj58anm29xwhere h

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