Answer to Question #286227 in Physics for des

Question

Calculate the period of a simple pendulum if the length is 12 inches.

Answer 1

$$T=2\pi\sqrt{\dfrac{l}{g}},$$ $$T=2\pi\sqrt{\dfrac{12\ in\times\dfrac{0.0254\ m}{1\ in}}{9.8\ \dfrac{m}{s^2}}}=1.11\ s.$$