A simple pendulum of length takes to complete 20 small–amplitude oscillations

PHYSICS · Subjective · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

A simple pendulum of length

0.90\,\text{m}

takes

38.0\,\text{s}

to complete 20 small–amplitude oscillations. Calculate the local value of

g

(in

\text{m\,s}^{-2}