In a simple pendulum of length l, the bob is pulled aside from its equilibrium position through an angle θ and then released. The bob passed through the equilibrium position with speed
1
\(\sqrt{2gl(1+\cos \theta )}\)
2
\(\sqrt{2gl \sin \theta}\)
3
\(\sqrt{2gl}\)
4
\(\sqrt{2gl(1-\cos \theta)}\)