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 hasvyppzf rn.v33k7 7ib* sevenq d8ql b3ieu( /u(ca;n sprockets at the rear wheel and three at the pedal cranks. In which gear is it harder to pedal, a small rear sprocket or a large rear sprocket? Why? In which gear(nd;aqeq3 u/i c( 8blu is it harder to pedal, a small front sprocket or a large front sprocket? Why?
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