阿摩線上測驗
2. If a simple pendulum oscillates with small amplitude and its length is doubled, what happens to the frequency of its motion?
(A) It doubles.
(B) It becomes 
times as large.
(C) It becomes half as large.
(D) It becomes 1/ times as large.
(E) It remains the same.
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統計： A(0), B(3), C(0), D(11), E(0) #3233268
統計： A(0), B(3), C(0), D(11), E(0) #3233268
