Answer:
Simple machines are tools that make it easier to do work by multiplying, changing, or transferring the force applied to an object. There are six types of simple machines: the lever, the pulley, the wheel and axle, the inclined plane, the wedge, and the screw.
Simple machines are essential to humans because they allow us to do work with less effort and force. They help us lift heavy objects, move things more easily, and complete tasks more efficiently. Without simple machines, many of the tasks we do on a daily basis would be much more difficult and time-consuming. They are the building blocks of more complex machines and technology, and are used in various industries like construction, manufacturing, transportation, and agriculture. Overall, simple machines play a crucial role in making our lives easier and more productive.
