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

[问答题]
A wheel of mass M has radius R.r6ur7 afglg u6g)jdef6j;.qd0e-;lp It is standing vertically on the floor, apd*t pb 4v5/bind we want to exert a horizontal for/it4p5dvbb*p 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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