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

More Questions:

What does MW stand for on a radio?

Which country has been donating London's Trafalgar's Square's Christmas tree since 1947?

In nautical terms, what does "Bow" mean?

Who was the second Toronto Blue Jay player to lead the American league in home runs?

What symbol shares a key with the number 4 on a standard computer keyboard?

What two-word phrase is the first writing to appear in "Charlotte's Web"?

According to J.K. Rowling, in what year was Albus Dumbledore born?

NATO's headquarters are located in which city?

How many wings does a flea have?

In how many theatrically-released movies has Anthony Hopkins played the character Hannibal Lecter?

What is the name of the cafe in the TV show "Friends"?

What does CSI stand for in the TV show by the same name?

Who played Maya Gallo on the TV show "Just Shoot Me"?

The "Italian Plague of 1629-31" is also referred to as by what other name?

Ouagadougou is the capital of which country?