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InventorsToolbox: The Elements of Machines

InventorsToolbox: The Elements of Machines
Simple Machines: These devices were all in common use for centuries before Leonardo's time. Each one makes work easier to do by providing some trade-off between the force applied and the distance over which the force is applied. Wheel and Axle In this machine a wheel or spoke is locked to a central axle so that when one is turned the other must turn. Pulley System A single pulley simply reverses the direction of a force. Wedge A wedge converts motion in one direction into a splitting motion that acts at right angles to the blade. Screw A screw is a central core with a thread or groove wrapped around it to form a helix. Lever A lever is a stiff rod that rotates around a pivot point. Other Elements of Machines: Though these devices were also used in machines in Leonardo's time, he experimented with them and made changes to improve how they worked. Gears Gears are toothed or pegged wheels meshed together to transmit motion and force. Cam A cam is a wheel with shaped bumps on it.

Dirtmeister: Simple Machines -- Inclined Plane Dirtmeister's Home The Inclined Plane The inclined plane is the simplest of simple machines because to make it work, nothing moves. You move! Remember, there's always a trade-off. Dirtmeister's Home | Simple Machines | Teacher's Guide | Science Observer 6 Simple Machines: Making Work Easier Throughout history, humans have developed a number of devices to make work easier. The most notable of these are known as the "six simple machines": the wheel and axle, the lever, the inclined plane, the pulley, the screw and the wedge, although the latter three are actually just extensions or combinations of the first three. Because work is defined as force acting on an object in the direction of motion, a machine makes work easier to perform by accomplishing one or more of the following functions: transferring a force from one place to another, changing the direction of a force, increasing the magnitude of a force, or increasing the distance or speed of a force. Many machines combine more than one of these devices to make work easier. For instance, we might attach a long handle to a shaft to make a windlass, or use a block and tackle to pull a load up a ramp. Wheel and axle The wheel is considered to be one of the most significant inventions in the history of the world. Lever Pulley

Simple Machine Lesson Plans | ApplianceHelp A simple machine is a device used to assist people in getting work done faster and easier. Scientifically, work is known as using force upon an object in order to transport it to a new location. Pushing, pulling, and lifting are all common forms of work. Simple machines can used to simplify these actions, making it easier for the laborer to complete the task. Pulleys, levers, wedges, screws, wheels and axles, and inclined planes are all examples of simple machines. They can all help people do work in some form. Here is a list of links to lesson plans and resources for teaching students about simple machines. Simple Machine Terms – An article containing the definitions of of the six simple machines.

Simple Machines: Facts (Science Trek: Idaho Public Television) Once upon a time a person needed to move something heavy. He or she picked up a long stick and stuck it under the edge of the heavy object and then pushed down on the other end of the stick. And the first simple machine was invented. Simple machines are just that. The simplest form of using one thing to accomplish something faster or better. A tool. There are 6 basic simple machines; the lever, the wheel and axle, the inclined plane, the wedge, the pulley, and the screw. But what is work? The Lever The lever is a long tool such as a pole or a rod put under an object to lift it. Levers are all around us. The Wheel & Axle The wheel has always been considered a major invention in the history of mankind. Wheels are found where things turn in a circle such as an electric fan, a motor, a revolving door, a merry go round, and any wheel — on the car, on your skateboard, or on a bicycle. The Inclined Plane The inclined plane is simply a ramp. The Wedge The Pulley The Screw Measuring Work

Gear Generator Animation: * Shift + Enter: Set RPM of the selected gear #0 - N8 - ratio: 1:1 - RPM: 6#1 - N16 - ratio: 2:1 - RPM: 3#2 - N12 - ratio: 2:1 - RPM: 3#3 - N60 - ratio: 10:1 - RPM: 0.6 Connection properties Gear properties * Shift + Enter: modifies the Diametral pitch Download Display Units Gear Generator is unitless: if you wish it's inches, cm or millimeters. About Gear Generator is a tool for creating involute spur gears and download them in DXF or SVG format. Why this tool was created? Support: abel@iparigrafika.hu Notes about browser compatibility: all new major browsers are supported (i didn't tested IE), but unfortunately Chrome can't render SVG circle correctly. The downloaded DXF file can be opened with AutoCad 2013 or newer versions. Update 1.5: Fixed DXF resolution issue. Update 1.4: TA-DA: Added internal gear support, and the ability of positioning the first gear. Update 1.3: Fixed DXF file format. On YouTube Check out other tools I made:Print Charts, Flip.World, HTML Spirograph.

ZOOM . games . Goldburger To Go Come play again later! Come play again tomorrow! ASPIRE Simple & Comples Machines In an unknown time and an uncharted place, the ASPIRE crew has accepted the challenge to assist in the completion of a city being constructed of massive stones. They must work without the advantage of modern technology. They have agreed to rely primarily on the use of the six simple machines to accomplish their mission. Before getting to work, two crew members, Harry and Pic, have used available materials to fashion themselves a tetter-totter just to give them something to do for fun. This never seems fair. Drag the slider bars to move Harry and Pic until they have becomed balanced. Simple machines give us an advantage by changing the amount, speed, or direction of forces. Would you have a problem if the door knob came off in your hand before you unlatched the door? From day to day do you find yourself using any of the six simple machines: Wedge Lever Incline Plane Pulley Wheel Screw

Rube Goldberg : Home of the Official Rube Goldberg Machine Contests The Rube Goldberg Machine Contest (RGMC) is an annual international competition that challenges teams of students from middle school to college age to compete in building the most elaborate and hilarious Rube Goldberg Machine. A Rube Goldberg Machine is an overly complex contraption, designed with humor and a narrative, to accomplish a simple task. The 2015 Task is: ERASE A CHALKBOARD. Team Registration is open now! The RGMC is STEM and STEAM friendly, and Teams and their machines are judged on a range of criteria from absurd complexity, reliability, team chemistry, creativity, humor and story-telling -- along with the successful achievement of the task at hand. Download the ALL NEW CONTEST 2015 Rule Book. Click here to find out How To Register Goldberg’s legacy lives on through the contests -- as students nationwide build crazy machines that complete the annual task, all in the spirit of Rube’s illustrations. View the International Online Contest page for middle school students.

All About Simple Machines: Types and Functions - Easy Science For KidsEasy Science For Kids Every day you use machines without even thinking about it. A machine is anything that helps make work easier. Basic tools like staplers, screwdrivers and scissors are simple machines. All About Simple Machines: These are samples of simple machines. A lever is a stiff board or bar that rests on a base called a fulcrum. A lever is a stiff board or bar that rests on a base called a fulcrum. Simple Machine Vocabulary Stiff: firm, unbendableBase: foundationSeparate: move apart A wedge has a pointed end. Learn More All About Simple Machines: Types and Functions A screw is an inclined plane wrapped around a rod. Watch this video all about simple machines: A cartoon video about the types and functions of simple machines. Simple Machine Q&A Question: Who invented the first simple machines? Answer: The Greek scientist and mathematician, Archimedes didn’t invent simple machines, but he did develop and improve them. Enjoyed the Easy Science for Kids Website all about Simple Machines info?

15 Easy Catapults to Make With Kids Making a catapult with kids starts out as a craft and ends with a fun activity! Add a target or a competitive goal and now you have a game. It might possibly be the perfect toy! 15 DIY Catapults All these catapults to make at home use everyday objects – hopefully you won’t have to buy a thing! These are in order as seen in the photo above with a few bonus catapults at the end. Plastic Spoon Catapult – Housing a Forrest starts us off with the simplest version of them all! Tinker Toy Catapult – Get out that cherished set and make an easy catapult! Dragon Slayer Catapult – There is a whole story behind this simple (and large) catapult from Frugal Fun for Boys. Tissue Box Catapult – This simple machine uses pencils and an empty tissue box from Spoonful. Paper Plate Target Game – This catapult game will have paper balls landing and math ensuing. Catapult Goal Game – This simple DIY game from Toddler Approved is catapult fun on a tabletop scale. Catapult Science Catapult Projectiles for Kids

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