Knives, axes, and door stops are all examples of these
What are wedges
200
This simple machine consists of a wheel with notches or teeth around its circumference
What is a gear
200
These are the three parts necessary to make a lever
What is load, effort, fulcrum
200
Tweezers
What is third class lever
200
Efficiency equals
What is Work (output)/Work (input)x 100%
200
Fasteners that exert a large amount of force to hold objects together.
What are screws
300
The rate of doing work
What is power
300
This is a type of lever that flings objects through the air
What is a catapult
300
Seesaw
What is first class lever
300
The equation for power
What is P = Work/(change in)time
300
A wheel and axle with a groove around its outer circumference mounted on an axle
What is a pulley
400
The measure of the reduction in effort to do a certain amount of work when using a simple machine
What is mechanical advantage
400
This is in the middle when you have a second class lever
What is the load
400
Wheel barrel
What is second class lever
400
This is the most familiar type of work. It occurs when a force acts on an object to move it in a direction parallel to the force.
What is mechanical work
400
A two-dimensional tilted surface that allows a resistance load to be moved from a lower to a higher position with less effort than lifting it vertically
What is an inclined plane
500
A rigid bar that rests on a pivot point
What is a lever
500
This is in the middle when you have a third class lever