Question
Which of the following gives the correct relation between the acceleration due to gravity and period of a pendulum?
1. $g=\dfrac{2\pi L}{T^2}$
2. $g=\dfrac{4\pi^2 L}{T^2}$
3. $g=\dfrac{2\pi L}{T}$
4. $g=\dfrac{2\pi^2 L}{T}$

(b)

Solution Video