Warm-Up Exercise 20

Due 1:00 pm, Tue, Nov. 8

Physics 313R, Fall Semester, 2011

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Sullivan "fixed" the G-ratchet by adding really stiff springs to the bolts as well as "locks" to keep them open until the rod moves past. Couldn't we just leave the locks out? Essentially just fix the G-ratchet (forget the S-rachet) by making stiff springs. What's wrong with this? Why won't it work? (besides it violating the Second Law!)

Pretend like you are going to lead a class discussion (maybe I'll call on you!) about Fig. 10.11. Explain what is going on here (especially in parts (c) and (d)).

Explain anything that you didn't understand in the reading assignment:


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