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Simple Machines

Page history last edited by kirish43@... 5 years, 3 months ago




Simple Machines

Here are the facts!


What are simple Machines? Read the introduction and explanation here


Try Me First






Two toothed wheels fit together either directly or through a chain or belt so one wheel will turn the other. Some gears may have a screw or a toothed shaft in place of one of the wheels. A gear may also be a combination of toothed wheels that produces a certain speed (such as a bicycle's top gear which makes the bike go fast, and the low gear for slow speed.)
Examples: Clock, Automobile, Drill
loading ramps 

Inclined plane:
A sloping surface, such as a ramp. An inclined plane can be used to alter the effort and distance involved in doing work, such as lifting loads. The trade-off is that an object must be moved a longer distance than if it was lifted straight up, but less force is needed.
Examples: Staircase, Ramp, Bottom of a Bath Tub


A straight rod or board that pivots on a point known as a fulcrum. The fulcrum can be moved depending on the weight of the object to be lifted or the force you wish to exert. Pushing down on one end of a lever results in the upward motion of the opposite end of the fulcrum.
Examples: Door on Hinges, Seesaw, Hammer, Bottle Opener

old wooden pulley  Pulley:
A wheel that usually has a groove around the outside edge. This groove is for a rope or belt to move around the pulley. Pulling down on the rope can lift an object attached to the rope. Work is made easier because pulling down on the rope is made easier due to gravity.
Examples: Flag Pole, Crane, Mini-Blinds
machine screws  Screw:
An inclined plane wrapped around a shaft or cylinder. This inclined plane allows the screw to move itself or to move an object or material surrounding it when rotated.
Examples: Bolt, Spiral Staircase
What are they??? Simple Machines:
A machine with few or no moving parts. Simple machines make work easier.
Examples: Screw, Wheel and Axle, Wedge, Pulley, Inclined Plane, Lever
iron wedge  Wedge:
Two inclined planes joined back to back. Wedges are used to split things.
Examples: Axe, Zipper, Knife
bicycle  Wheel and Axle:
A wheel and axle has a larger wheel (or wheels) connected by a smaller cylinder (axle) and is fastened to the wheel so that they turn together. When the axle is turned, the wheel moves a greater distance than the axle, but less force is needed to move it. The axle moves a shorter distance, but it takes greater force to move it.
Examples: Door Knob, Wagon, Toy Car




Virtual Makerspace Try it out







Lab Activities



Play and Learn with Rube Goldberg Machines




Wallace and Grommet presents Invention Suspension:  Cracking ‘Copter Capers

























Professor Fizzwizzle



Contraption games


Build a Rube Goldberg Machine


Create your own Compound machine similar to contraptions- This is fun












Use the link below to put together a compound machine to move the ball into the cup!



Cloud creator






Word Play









Review infor at http://www.coe.uh.edu/archive/science


1. Name each of the simple machines and explain what each one does in your own words (18 points)


2. Draw ten examples of each that are used in everyday life. You can sketch by hand, use sketch-up, kid pix, or GIMP. Try to come up with different ones than those used in the tutorial.


3. What is the formula for work ? http://library.thinkquest.org/20991/gather/formula/data/300.html

http://www.physicsforums.com/archive/index.php/t-116620.html (6 points)

4.Create 7 word problems that use the formula for work. Solve each problem and show your work.


Examples of Simple Machines





Rube Goldberg
Simple Machines

Beakman Levers
iknowthat.com - Widgets
Interactive Simple Machines
Soda Constructor
Lever an Obelisk
Elements of Machines
Leonardo's Mysterious Machines
Animated Engines
EdHeads Simple Machines
EdHeads Compound Machines
NetLinks - Break It Down
NetLinks - Power Play
Dirtmeister: Simple Machines
MIKIDS - Simple Machines
MOS Inventor's Toolbox
EdHeads Simple Machines
MSI Chicago - Simple Machines


The Experiments


Springs 1 Gears 1
Springs 2 Gears 2
Springs At Home Gears 3
Friction 1 Wheels At Home
Friction 2 Levers 1
Friction At Home Levers 2
Overcoming Friction 1 Levers At Home
Overcoming Friction 2 Inclined Planes 1
Overcoming Friction At Home Inclined Planes 2
Pulleys 1 Inclined Planes At Home
Pulleys 2







Online practice quiz http://www.quia.com/pop/36854.html?AP_rand=453569407



Click here to go back to the Interactive Lesson Page




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