This is what makes complex machines so useful and so important in the real world and in your daily life. Complex machines do more than the simple machines they are composed of could do on their own. Let's review. A complex machine is a machine made up of two or more simple machines that make your work easier to do.
You have complex machines that help you with office tasks such as the stapler: Stapler - made from a lever and a wedge. And you have complex machines that help you with your car: Car jack - made from a wedge and a screw. Tow truck - made from a lever and pulley.
Surprisingly, there are only six simple machines that are used to make complex machines.
You also have complex machines that help with yard work: Wheel barrow - made from a wheel and axle, lever, and inclined plane. Garden hoe - made from a wedge and lever. You also have complex machines that help you with getting from one place to another: Bicycle - made from screws, levers, pulleys, and wheels and axles.
The conservation of energy principle states that energy can neither be destroyed nor created. Instead, energy just transforms from one form into another. So what exactly is energy transformation? Well, as you might guess, energy transformation is defined as the process of changing energy from one form to another.
Chemical energy is the energy stored within a substance through the bonds of chemical compounds. The energy stored in these chemical bonds can be released and transformed during any type of chemical reaction.
Now that you know about all of the different types of energy, we're going to look at some examples that you see in your everyday life. For example, rubbing your hands together converts chemical energy in your muscles to kinetic energy as they move, and then thermal energy as you generate heat.
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