[header] How to use a pendulum [title] Know that a pendulum is a weight hanging freely at the end of a string. [step] Before you start using a pendulum, you need to know what it is and how it works. Luckily, a pendulum is no more than a hanging weight allowed to swing back and forth. 
The string is attached to a fixed point so that only the weight and string are moving. [substeps] Hold the end of pendant necklace or yo-yo between your fingers and move the " weight " at the bottom.