Monjolo is a special type of machine that makes things easier for people who live in rural areas where there is no electricity or running water. It looks a bit like a windmill, but it works a bit differently.
Imagine you have a toy car that you really want to play with, but you need to make it move without using a battery or a plug. You might try blowing on it to make it go, right? That's kind of like how a monjolo works!
A monjolo has a big lever that goes up and down like a seesaw. When the lever goes up, it picks up a big stone and lifts it into the air. Then, gravity makes the stone fall back down and hit something on the ground. This makes a little bit of power that can be used to do things like grind grain, pump water, or charge a phone.
So, the monjolo takes the power of the falling stone and turns it into something useful for people who need it. It's like magic but it's actually science!