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by Paul Dohrman
Compound machines are combinations of simple machines, like pulleys, inclines and wheels. This guide looks at the simple machines and then gives everyday examples of compound machines found in cars, at the pool, at the pier and even in hunting.
A simple machine is a device that uses a fulcrum and lever system to perform a function, such as a cork screw or a basic lever. Apply force to a simple machine to discover Read More
A high school science student comes home with an assignment to invent a useful compound machine from odds and ends found in the household. His grade depends upon how many Read More
The pulley is one of six "simple machines." The others are the lever, the inclined plane, the wheel and axle, the screw, and the wedge. All simple machines can multiply Read More
A pulley is any mechanical device that uses a wheel with a groove to turn and pull an object with a type of yarn or material. Discover the many uses for a pulley with Read More
Inclined planes work by increasing the distance the load must be moved, thereby decreasing the force necessary to move the load. An example is pushing a couch up the Read More
Levers and pulleys are uncomplicated machines that make work easier by improving mechanical advantage, meaning that they reduce the effort needed to do a task. They provide Read More
This machine can be built with things that are either free or lying around the house. A simple wheel and axle machine allows the study of torque and shows how the Read More
The fulcrum changes the spring dynamics of the diving board. Learn about the fulcrum and how it works from a professional diving instructor in this free video. Read More
Doing some car repairs? Learn all about the pulley configuration of serpentine belts with expert car maintenance tips in this free auto repair video. Read More
Reeving blocks to set up a double pulley system requires a little thought. A double pulley system, also known as a "block and tackle," consists of the pulleys, or blocks, Read More
A system of multiple pulleys connected to a load by a rope and hook, the block and tackle is a fundamental tool for efficient lifting of heavy objects. This simple rope and Read More
A compound bow is similar to a traditional longbow or recurve bow, except its design and material give it significant advantages, among them increased power and accuracy. Read More
Learn about the different parts of the bow with expert tips and advice on archery in this free video clip. Read More
Learn tips and techniques on log cutting tools when burning wood in a fireplace in this free how-to video on using wood-burning fireplaces. Read More
Are you wondering what to do about that big pile of wood that's too big for your fireplace or woodstove? Are you tired of splitting firewood by hand until your back hurts Read More
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