本题目来源于试卷: gc textbook chapter 8 Rotational Motion，类别为 unclassified
[问答题]
A 21-speed bicycle has seven sprockets at the rear wheel and three,d:w/c5w,8 pgrv ie rfr:xp.f at the pedal f ,8cgpp/id,rf:vrx e r w.5:w5sv 44qck0k0 x58yf mc wd.5+qemqjer f8un6vcranks. In which gear is it harder to pedal, a small rear sprocket or a large rear sprocket? Why? In which gear is it harder to pedal, a small fr4dywq8qr6.f8 mf4sxjv e ek5 + u0vcqkc5n50mont sprocket or a large front sprocket? Why?
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Post time 2025-2-18 20:00:22