Calculate the mechanical advantage for each simple machine. Simple Machines :. There are six simple machines:. Inclined Plane :. An inclined plane is a slanted surface used to raise an object. It reduces the force required to move an object by increasing the distance of movement. The height will always be shorter than the length.
Wedges and Screws :. A wedge is simply an inclined plane that moves. A wedge multiplies a force from a larger area to smaller area. A screw is an inclined plane wrapped around a cylinder. The screw multiplies the F E by acting through a longer distance.
The closer the threads are the greater the mechanical advantage. Lever :. A lever is a bar that is free to move about a pivot point when a F E is applied to it. The pivot point is called the fulcrum. There are 3 classes of levers The type of lever depends on the location of the fulcrum.
The F E is placed between the F R and fulcrum 3rd class levers multiply the distance but do es not change its direction or increase its F E. Mechanical Advantage of a lever :. Inclined planes can wrap around an object, such as a mountain. When a road gently slopes up around a mountain, the driving distance increases, but less power from the engine is needed to get the car to the top of the mountain.
Just as the inclined plane can surround a mountain, it can wrap around a central cylinder, as in a screw. This increases the distance the screw must turn to be put into the wood, but it requires less force than hammering a nail straight into the wood. The Inclined Plane. What Simple Machines Make a Wheelbarrow? A Lesson to Introduce Simple Machines. Types of Simple Machines in a Pencil Sharpener. How to Calculate the Area of a Pipe.
List of the Advantages of Friction. How Doorknobs Work as a Simple Machine.
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