What is the common word for a weight suspended from a pivot that can move freely?

More Questions:

What is BMW's name short for?

What country are eclairs said to have originated from?

Which country invented the sauna?

What name is given to the ancient Christian and Jewish underground burial chambers in and around Rome?

Who painted the "Laughing Cavalier"?

When did the Republic of South Sudan gain its independence?

What moisturizer is derived from sheep's wool?

What is the study of ants called?

What future star played Natalie Portman's stand-in queen in "Star Wars Episode I: The Phantom Menace"?

What future game show host had a Top Forty hit with 1968's "Naturally Stoned"?

Which actor played the role of God in the movie "Bruce Almighty"?

What is the oldest university in the US?

What purpose did the Colosseum serve when first built?

What US Midwestern city garnered the nickname Porkopolis in 19th century?

What state borders Alabama to the north?