The Period of a Pendulum Is the Time It Takes

question 48

Multiple Choice

The period of a pendulum is the time it takes the pendulum to swing back and forth once. If the only dimensional quantities that the period depends on are the acceleration of gravity, g, and the length of the pendulum, ℓ, what combination of g and ℓ must the period be proportional to? (Acceleration has SI units of m ∙ s^-2.) .

• A) g/ℓ
• B) gℓ2
• C) gℓ

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