The length of a certain simple pendulum is given to be

PHYSICS · Multi-part · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

\dfrac{45}{\pi^{2}}\,\text{m}

. Take

g = 9.8\,\text{m s}^{-2}

. (i) Calculate the time period of the pendulum. (ii) Hence find its frequency. (iii) If the length of the pendulum is increased by

20\%

, compute the new time period.