a rube goldberg invention

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A Rube Goldberg Invention. Rube Goldberg. This is Webster ’ s definition: A contrivance or method to accomplish an apparently simple task in an extremely complex way So much for the K.I.S.S. method! ( K eep I t S imple S weetie). Who was Rube Goldberg?. - PowerPoint PPT Presentation


  • A Rube Goldberg Invention

  • Rube GoldbergThis is Websters definition:A contrivance or method to accomplish an apparently simple task in an extremely complex waySo much for the K.I.S.S. method! (Keep It Simple Sweetie)

  • Who was Rube Goldberg?He lived at the turn of the last century.He loved poking fun at all of the modern conveniences that were being developed at the beginning of the 20th century.

  • A little more about Mr.GoldbergReuben Lucius Goldberg studied at the University of California at Berkeley. After graduating in 1904, he started working as a sports cartoonist for the San Francisco Chronicle.In 1907 he moved to New York after selling his Sunday half-page strip 'Mike and Ike'. This comic didn't generated much response.He eventually landed a job at the New York Evening Mail. Apart from drawing comics, he also took a shot at vaudeville, becoming a stand-up comedian and fortune-teller in 1911!

  • Rube Goldberg gets his think-tank working and evolves the simplified pencil-sharpener.Open window (A) and fly kite (B). String (C) lifts small door (D) allowing moths (E) to escape and eat red flannel shirt (F). As weight of shirt becomes less, shoe (G) steps on switch (H) which heats electric iron (I) and burns hole in pants (J). Smoke (K) enters hole in tree (L), smoking out opossum (M) which jumps into basket (N), pulling rope (O) and lifting cage (P), allowing woodpecker (Q) to chew wood from pencil (R), exposing lead. Emergency knife (S) is always handy in case opossum or the woodpecker gets sick and can't work.

  • Rube Goldberg has inspired many inventors.Enjoy this short movieIts meant to be an elaborate way to get a very simple thing done

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  • Simple MachinesRube Golberg used a variety of simple machines put together in a complex way to perform a simple task.

  • What is a Simple Machine?A simple machine has few or no moving parts.Simple machines make work easier

  • Simple MachinesLeversPulleysInclined planesWedgeScrewWheel and axle

  • Simple MachinesAre used to hunt, gather plants, make clothes, build shelter, and protectionThey copy nature such as:Beavers cutting logsWoodpeckers pecking on a tree trunkMoles clawing their way through the dirt

  • LeversLevers make it easier for people to lift heavy objects or open things.The object being moved or opened is called the load.The force that is exerted is the effort.Fulcrum is the fixed point that allows a pivot to occur.In every lever there is an ELF.

  • Levers-First ClassIn a first class lever the fulcrum is in the middle and the load and effort is on either sideThink of a see-saw

  • Levers-Second ClassIn a second class lever the fulcrum is at the end, with the load in the middleThink of a wheelbarrow

  • Levers-Third ClassIn a third class lever the fulcrum is again at the end, but the effort is in the middleThink of a pair of tweezers

  • Inclined PlanesAn inclined plane is a flat surface that is higher on one endInclined planes make the work of moving things easierRamps are inclined planesYou must travel a greater distance

  • ScrewsA screw is an inclined plane wrapped around a shaft or cylinder. The inclined plane allows the screw to move itself when rotated.

  • WedgesTwo inclined planes joined back to back. Wedges are used to split things.

  • Wheels and AxlesThe wheel and axle are a simple machineThe axle is a rod that goes through the wheel which allows the wheel to turnGears are a form of wheels and axles

  • PulleysPulley are wheels and axles with a groove around the outsideA pulley needs a rope, chain or belt around the groove to make it do work

  • GearsA wheel with teethUsed to transfer powerOne gear cannot work on its ownMany gears are connected with chains

  • Compound MachinesSimple Machines can be put together in different ways to make complex machinery.

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    *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. You can use this machine to move an object to a lower or higher place. Inclined planes make the work of moving things easier. You would need less energy and force to move objects with an inclined plane.