It$$s a Seconds Pendulum! A seconds pendulum is a simple pendulum that crosses its equilibrium position once every second.

A$.$ Find the length of this pendulum.

B$.$ Our definition for the length of a meter is the distance light travels in $1/299,792,458$ s$.$ Given your answer to part a$),$ why do you think we don$$t just use the length of a seconds pendulum as our standard for the definition of a meter instead?

C$.$ Given that the length of a seconds pendulum is $0\mathrm{.}9927$ m in Tokyo, Japan, and $0\mathrm{.}9942$ m in Cambridge, England, how much longer would it take for a penny to fall from a $100$ m building in Tokyo than in Cambridge?