Relativity and Pendulums

So Gents, I got to thinking, what happens when you approach a pendulum at something like .9c? I mean, would the period slow down, Would it speed up?

I'm thinking it'd slow down, personally, but then again, I'm some guy on the internet.

If you have to ask, there's no way you have any use for the answer, because you won't understand why.

what do you mean by an amount of time getting faster or slower? don't you mean smaller/bigger?

Actually, the parsec is a unit of distance.

Whats the frame of reference of the lab?

Ok please ignore my point in >>5 I was too special (with a capital R) to read the question correctly.

Anywho the answer is time would slow down.