Chapter 3: Work and Simple Machines Flashcards
What is work using one movement?
Simple Machine
What is a simple machine made up of a bar that pivots, or rotates, about a fixed point?
Lever
What is the point about which a lever pivots
Fulcrum
What is the type of lever that the direction of the input force is always different than the direction of the output force?
Type 1 Lever
What is the type of lever that the output force and the input force act in the same direction?
Type 2 Lever
What is the type of lever that the output force is less than the input force?
Type 3 Lever
What is an axel attached to the center of a wheel and both rotate together?
Wheel and Axel
What is a flat, sloped surface?
Inclined Plane
What is a sloped surface that moves?
Wedge
What is an inclined plane wrapped around a cylinder?
Screw
What is a simple machine that is a grooved wheel with a rope or a cable wrapped around it?
Pulley
What is the transfer of energy that occurs when a force is applied over a distance?
Work
What is the rate at which work is done?
Power
What is the ratio of a machine’s output force produced to the input force applied
Mechanical Advantage
What is the ratio of output work to the input work?
Efficiency
