What is pendulum?

A pendulum is like a swing that moves back and forth on its own.

Imagine you're on a playground swing. When someone pushes you, you go forward, and then you come back, swish, swish, just like that. A pendulum works the same way, but it doesn’t need anyone to push it every time. It just needs a little help at the start.

A pendulum has two main parts: a weight (called a bob) and a string or rod that connects it to a fixed point, like the top of a clock. When you pull the bob back and let go, gravity pulls it down, making it swing forward. Then, as it moves past the middle, it swings up on the other side, and keeps going back and forth until it slows down.

Pendulums are used in clocks to help keep time. The number of times a pendulum swings in one minute is very steady, like counting seconds with perfect rhythm. This makes clocks accurate and reliable, just like how you know your favorite song plays at the same speed every time!