gc textbook chapter 8 Rotational Motion (id: f1a5b03e2)

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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 at thepgu.q7o7e d73qr5 vye )nu0 y :wxo9bs t2ljh +ag8j41 h7-goomyky u :pedal cranks. 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 hy4 uhg7y: +o-l toga81k2j jmpedal, a small front sprocket or a large front sprocket? Why?

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