Esmont is a historic home located near Esmont, Albemarle County, Virginia. The house was built about 1818, and is a two-story, three bay, square structure in the Jeffersonian style. It has a double pile, central passage plan.
These three simple machines all alter force in such a way that it makes it easier to move an object. You might not have noticed, but we use these simple machines all the time. Every time you sweep the floor with a broom you're using a type of lever.
Windmills are machines designed to convert the force of the wind into power to be used by humans. In the Great Plains, windmills were used, and continue to be used, primarily to pump water for consumption by people and domestic animals. Windmill installations typically consist of the actual wind machine and a tower (derrick) to support it in the air. Most windmills used in the Great Plains were of self-governing design. This means that they automatically turned to face changing wind directions and automatically controlled their own speeds of operation to avoid destruction from centrifugal force during high winds.