Simple Machines
Published on Nov 21, 2015
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PRESENTATION OUTLINE
INCLINED PLANE
- Flat surface
- When slanted, move objects
- Ex: ramps, staircases
WEDGE
- A type of inclined plane
- Pushes things apart
- Edge of a smooth surface
- Ex: axe, knife
Photo by Garrett Wade
SCREW
- Inclined plane wrapped around a cylinder
- Holds things together
- Every turn helps move a piece of metal through an object
Photo by Robert S. Donovan
LEVER
- Pries things loose
- An arm that pivots against fulcrum
- Ex: seesaw, crowbar
- 3 types: 1st, 2nd, & 3rd Class-depends where fulcrum is
Photo by mstancik
WHEEL & AXLE
- Many levers put together
- Carries objects through a distance
- Wheel turns axle causing movement
Photo by kevin dooley
PULLEY
- Similiar to a wheel & axle
- Cord wraps around wheel
- Cord moves direction
- Raise and lower objects
- Ex: flagpole
Photo by Elsie esq.
