How do you build foucault pendulum?

Answer 1

Any pendulum on a string ... free to swing in any direction ... can demonstrate

the behavior associated with Foucault's pendulum. The only trick is that it has to

keep going for several hours before the behavior is obvious. So the task of

building a Foucault pendulum is actually the task of building a pendulum that

doesn't run down and stop. There are a number of simple electric/magnetic ways

to do that, including the one I installed in 1968, to run the Foucault Pendulum

in the lobby of the Oklahoma Science and Arts Foundation, at its old location at

the Oklahoma State Fairgrounds.

Answer 2

To build a Foucault pendulum, you need a heavy mass attached to a long wire hanging from a sturdy support structure. You also need a base or pivot point that allows the pendulum to swing freely in any direction. The pendulum will exhibit the Earth's rotation as it swings, demonstrating the principle of the Earth's rotation.