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By: Disha & Haena

Elevator. By: Disha & Haena. What is an Elevator?. Another name (lift) Call it as a transport Moves people easily Different levels of floors. History of the elevator . Many people invented ( B.C ) Counterweight Pulley System Elisha Graves Otis ( 1811 – 1861) Otis Safe Elevator

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By: Disha & Haena

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  1. Elevator By: Disha & Haena
  2. What is an Elevator? Another name (lift) Call it as a transport Moves people easily Different levels of floors
  3. History of the elevator Many people invented ( B.C ) Counterweight Pulley System Elisha Graves Otis ( 1811 – 1861) Otis Safe Elevator Become famous
  4. Why was it made? Easier transportation Emergency or to not be late. Time and energy Easy way
  5. How does it work? This invention has a lot of components such as sheave, pulley, counterweight,etc… The ropes is attached The motor makes the car move Counterweight This is the picture of sheave This is the picture of pulley This is the picture of counterweight http://www.vtaide.com/png/George/elevator.htm
  6. What simple machine does it use? Pulley System
  7. How do the simple machines make the work easier? For an elevator, it uses the pulley system. Pulley : simple machine Magnifies the force Less effort < More pulleys = Less effort>
  8. Advantages/Disadvantages Advantages Time Our Energy Disadvantages Stairs are faster Exercise Germs Claustrophobia Claustrophobia
  9. One World- Social Impact Relates to people This invention is for human It changed world
  10. Bibliography "Businessman Waiting for a Slow Elevator Clipart - Royalty Free Clipart Picture." Clipart Guide.com - Clip Art, Pictures, Stock Photos, Web Graphics. N.p., n.d. Web. 20 Apr. 2011. <http://www.clipartguide.com/_pages/0060-0808-2614-3103.html>. "Elevator." Wikipedia, the Free Encyclopedia. Web. 18 Apr. 2011. <http://en.wikipedia.org/wiki/Elevator>. "Elevator - why was the elevator made?." Wikipedia, the free encyclopedia. N.p., n.d. Web. 19 Apr. 2011. <http://en.wikipedia.org/wiki/Elevator "How Does an Elevator Work?" Virtual Teacher Aide. Web. 18 Apr. 2011. <http://www.vtaide.com/png/George/elevator.htm>. Leishman, Ron. Royalty-Free (RF) Clip Art Illustration of a Cartoon Confused Businessman Waiting By An Elevator. ClipartOf. http://www.clipartof.com/details/clipart/439624.html. April 19th 2011. Morgan, Lee. "Disadvantages of Elevators | EHow.com." EHow | How to Videos, Articles & More - Trusted Advice for the Curious Life | EHow.com. Web. 20 Apr. 2011. http://www.ehow.com/list_6828149_disadvantages-elevators.html. Yen ne, Bill, and Morton Grosser. 100 Inventions That Shaped World History. San Francisco, CA: Bluewood, 1993. Print. Elisha-Otis. Elevtaorhistory. Elevator
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