Simple Machines
Subdecks (1)
Cards (119)
- Machine: a device that helps us do work
- Mechanism is made up of several different types of machines that work together to perform a specific function
- Simple Machine: A machine that requires the application of a single force to do work
- Inclined Plane, also called a ramp, makes it easier to lift a heavy object up a ramp than straight up
- Inclined Plane requires a longer distance and is best with smaller inclines
- The steeper the ramp, the harder it is to control the motion of the object on the ramp
- Wedge is similar to an inclined plane but used differently, it is forced into an object to split it apart
- Screw is a cylinder with a groove cut in a spiral on the outside, it helps increase the force used and converts rotational motion to linear motion
- Pulley consists of wire, rope, or cable moving on a grooved wheel, can be fixed or movable, and helps lift larger loads than you could on your own
- Wheel and Axle is a combination of two wheels of different diameters that turn together, exerting a large force on a small gear to turn a larger tire
- Levers are rigid bars that can rotate around a fixed point called a pivot or fulcrum, used to reduce the force needed to carry out tasks
- There are three classes of levers: 1st, 2nd, and 3rd
- Ideal Mechanical Advantage (IMA) of a lever is calculated by dividing the length of the input arm by the length of the output arm
- First-class levers have the fulcrum between the input and the output
- Second-class levers have the load between the effort and the fulcrum
- Third-class levers have the effort between the load and the fulcrum
- A simple machine is a device that requires a single force to do work and is made up of only one or two parts
- Pulley consists of a round wheel with a rope or cable looped around it, can change the direction of the force or increase the output force
- Wheel and Axle is made up of two circles: the smaller one is the axle, and the larger one is the wheel
- Inclined planes are tilted flat surfaces, like ramps
- Screw is an inclined plane revolving around a cylinder, designed to make work easier to do
- Wedge consists of two inclined planes back to back, the longer and narrower the wedge, the greater the mechanical advantage