Simple Machines

Simple machines are mechanical devices that use a force to do work. They can change the direction or magnitude of a force. Simple machines have few or no moving parts and are often used as building blocks to create more complex machines. 

Some examples of simple machines include: Levers, Nail pullers, Wheelbarrows, Cranks. 

Simple machines can work in a variety of ways, including: 

• Transferring a force from one place to another

• Changing the direction of a force

• Increasing a force's magnitude

• Increasing the distance or speed of a force

Simple machines can make physical work easier by changing the amount of force required to do work or changing the direction of the force required to do work. For example, a small force can lift a heavy weight using a lever.