A wheel of mass M has radius R . It is standing vertically on the floor, and we want to exert

A wheel of mass M has radius R . It is standing vertically on the floor, and we want to exert

A wheel of mass M has radius 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. 8–60). The step has height h, where h < R. What minimum force F is needed?

FIGURE 8–60

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