Mechanical Systems (Checkpoint One & Two) Flashcards
What is a machine/mechanical device?
Machines are tools that help humans do work, move objects, or transfer energy.
What are some examples of mechanical devices?
Brooms, aqueducts, cars, screwdrivers, nutcrackers, and elevators, etc.
What is a aqueduct?
A machine used for transporting water for many kilometers, to supply cities.
What is a sakia?
A series of buckets attached to a long rope and draped over a wheel.
What is a Archimedes screw?
A screw that picks up water and carries it up to the top of the tube.
What is a simple machine?
A tool or device made up of one basic machine.
Describe a first class lever, and provide an example.
Effort, fulcrum, load. One example is a teeter-totter.
Describe a second class lever, and provide an example.
Effort, load, fulcrum. One example is a wheelbarrow.
Describe a third class lever, and provide an example.
Load, effort, fulcrum. One example is a hockey stick/broom.
Describe a lever.
A rigid bar or plank that can rotate around a fixed point.
What is a wedge?
A simple machine that looks like an inclined plane, but is forced into a object. One example is a knife.
What is a inclined plane/ramp?
A simple machine made up of a flat surface such as a board, that sits on an angle against another flat surface such as a tabletop. One example is a chisel.
What is a pulley?
A simple machine made of a wire/rope/cable moving on a grooved wheel. One example is a elevator.
What is a screw?
A simple machine that can consists of a cylinder, with a groove cut in the spiral on the outside. One example is a bottle cap.
What is a wheel and axle?
A simple machine made up of two wheels, that turn together. They are attached by a rod. One example is a bicycle wheel.
