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 o);t x5 c2f*v il9de8wjelg0 vsprockets at the rear wheel and thbx (ph 4vaw6p,qc:s-oree at the pedal cranks. In which gear is it harder to pedal, a small rear sprocket or a large rear sproq ow,hv(b4xp 6sc -p:acket? Why? In which gear is it harder to pedal, a small front sprocket or a large front sprocket? Why?

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