If you where directly above the North/South pole and set up Foucault's pendulum, why does it show the Earth's spin even though the Earth isn't spinning there? This is also where it takes the shortest amount of time.
And now you set up Foucault's pendulum exactly on the equator it doesn't show you that the Earth is spinning even though it spins the fastest here, it will just keep going in the same path.
My question is why at the North/South pole where the earth does not spin you can see Foucault's pendulum demonstrate spin? And at the equator where the Earth spins the fastest it doesn't demonstrate spin?
Thanks for any replies, I spent a few hours looking for an answer but, I couldn't find any answer that explained it well.