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

[问答题]
A wheel of mass M has radius R. It is standz+iaocm e2z*)3qn 7hnn9si5 wing vertically o t6+p3lh)q -gfmaja.a ji+gz,n the floor, and we want to exert a horizontal force F at its axle+am.)p+6g tf3lgq,j-za ihaj 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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