# 51. Law of the Pendulum The period of a pendulum (the time elapsed during one complete swing of the pendulum) varies directly with the square root of the length of the pendulum. (a) Express this relationship by writing an equation. (b) To double the period, how would we have to change the length l?

Question

Law of the Pendulum The period of a pendulum (the time
elapsed during one complete swing of the pendulum) varies
directly with the square root of the length of the pendulum.
(a) Express this relationship by writing an equation.
(b) To double the period, how would we have to change the
length l?

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Algebra

### Applications of Mathematics

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51. Law of the Pendulum The period of a pendulum (the time elapsed during one complete swing of the pendulum) varies directly with the square root of the length of the pendulum. (a) Express this relationship by writing an equation. (b) To double the period, how would we have to change the length l?