Machines are things that make our daily lives easier for us. Without these machines, many tasks will become either difficult or totally impossible. They have few or no moving parts. These machines use energy to work.

 

A simple machine is any device that helps us to perform our work more easily when a force is applied on it. A screw, wheelbarrow and a bottle opener are all simple machines. To make any of these simple machines do work for us, we need to apply a force on it.

                                      

There are many ways that simple machines can help us. It allows us to use a smaller force to overcome a larger force. It can also help us change the direction of the force and work with a faster speed.