Simple machines

Simple machines are tools that we use to make work easier. They have been around for thousands of years - as long as humans have been using tools! Simple machines are made up of few parts and use basic physical principles to help us do things like cutting, lifting, and pushing. These simple machines make it easier to do things like move heavy objects, like a wheelbarrow, or open a lid on a jar. They work by using a few parts to create mechanical advantage, which means they make your work easier. For example, if you are using a lever, one end of the lever does less work than the other, making it easier for you to lift the object. Other common simple machines include the pulley, which helps to change the direction of the force you are using, and the screw, which helps to hold things together.