根据简谐运动的周期公式，得到单摆的周期公式。

According to the cycle formula of simple harmonic vibration, the cycle formula of simple pendulum could be figured out.

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根据简谐运动的周期公式，得到单摆的周期公式。

According to the cycle formula of simple harmonic vibration, the cycle formula of simple pendulum could be figured out.

youdao