Simple Machine
A device that either multiplies or redirects a force
Force
A push or pull exerted on an object in an effort to change that object’s velocity
Mechanical Advantage
The amount by which force or motion is magnified in a simple machine.
MA for Lever
(distance from fulcrum to effort) divided by (distance from fulcrum to resistance
MA for Pulley
Number of pulleys
MA for Wheel and Axle
(diameter of the wheel) divided by (diameter of the axle)
MA for Inclined Plane/Wedge
(length of slope) divided by (height)
MA for Screw
(Circumference) divided by (pitch)
Diameter
The length of a straight line that travels from one side of a circle to another and passes through the center of the circle
Circumference
The distance around a circle, equal to 3.1416 times the circle’s diameter
How is applied science different from science?
Science is motivated by curiosity to understand
Applied Science is aimed at trying to find something useful
What gives rise to technology?
Technology can be the result of applied science or science; technology can be the result of accident.
