Unpowered machine uses one motion to change size + direction of force
Simple machine
moving parts accomplish specific task
Mechanical system
Ratio of output force to input force
Mechanical advantage
Mechanical system capable of performing work
Machine
Type of simple machine consisting of uniformly sloping surface
Ramp
Wheel with teeth. Two or more ____ can be connected to transfer motion from one place to another. Use to change speed for direction
Gear
Simple machine consisting of a threaded body and grooves head that turns rational motion into a linear motion
Screw
Simple machine. Pulley is a wheel with a rim that rotates on the shaft in carries the rope transmits motion and force
Ropeand pony
System isolated so we cannot exchange energy or matter was surroundings
Closed system
Quantity of the force multiplied by a distance. Energy used to move something
work
Simple machine consisting of a rigid bar able to turn around a fixed point called a fulcrum. Used to move a lift load
Lever
Opposes the relative motion of the bodies
Friction
J unit for energy and work
Joule
Force applied to machine
Input force
Force produced by a machine
Output force
Point about which a lever rotates
Falcrum
Work or energy put into a machine that resources used by a machine
Input
Or energy produced by a machine product of a system and machine
Output
Distance on the lever between in the Fulcrum anf the point where the input force is applied
Input arm
Distance on a lever between the fulcrum and where the output force is exerted
Output arm