EM-176

Changing the subject of a formula

E Math · Secondary 3 · Medium · Changing the subject of a formula

A pendulum has period given by

T = 2\pi\sqrt{\dfrac{L}{g}}

, where

L

is its length and

g = 9.8\,\text{m/s}^2

. If the period is

2.0\,\text{s}

, what is the length of the pendulum?

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