Question

Calculate the frequency of the oscillations of a simple pendulum of length 984 mm. Give your answer to an appropriate number of significant figures

Answer 1

$$T=2\pi\sqrt{\dfrac{L}{g}}=2\pi\sqrt{\dfrac{0.984\ m}{9.8\ \dfrac{m}{s^2}}}=1.989\ s,$$ $$f=\dfrac{1}{T}=\dfrac{1}{1.989\ s}=0.503\ Hz.$$