gc textbook chapter 8 Rotational Motion (id: f1a5b03e2)

[问答题]
A 21-speed bicycle has seven sprockets at the ta9)4 txgxqa: rear wheel and ttah-bd q8ntq 02*.j hthree at the pedal cranks. In which gear is it harder to pedal, a small rear sprocket or a large rear sprocket? Why?8*tan j0q b td2ht.q-h In which gear is it harder to pedal, a small front sprocket or a large front sprocket? Why?

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