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Summary of Contents for Eisco WDMS15
- Page 1 SIMPLE MACHINES : GEAR CAT NO. WDMS15 Experiment Guide...
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Page 2: General Background
Here a greater force at the pedal over a smaller distance was traded for a smaller force on the wheel, covering a greater distance. © EISCO SCIENTIFIC www.eiscosci.com... - Page 3 Let's say the bottom wheel has a diameter of only half that of the top wheel. So 5.0cm x 3.14 = 15.7 cm of distance covered, so the bottom gear would have to rotate twice for each time the top gear rotated once. Therefore the gear ratio would be 2:1. © EISCO SCIENTIFIC www.eiscosci.com...
- Page 4 Again you are trading force for distance so energy (the amount of work done) is conserved. REQUIRED COMPONENTS (INCLUDED) Name of Part Quantity Gear Base Pole with teeth © EISCO SCIENTIFIC www.eiscosci.com...
- Page 5 Measure the distance the post traveled. Compare the distance the post traveled to the distance one gear tooth traveled. (The distance the gear tooth traveled is equal to the distance the post traveled.) © EISCO SCIENTIFIC www.eiscosci.com...
- Page 6 A greater distance covered means the diameter of my steering wheel would need to be bigger than the diameter of my pinion.) © EISCO SCIENTIFIC www.eiscosci.com...
- Page 7 In the case of rack and pinion steering, is rotational motion being converted to translational motion, or is translational motion being converted into rotational motion? ________________________________________________________________ ________________________________________________________________ How many teeth are in your gear model? ____________ How many teeth are in your post? ____________ Diagram 3 © EISCO SCIENTIFIC www.eiscosci.com...
- Page 8 Is it possible to add a steering wheel to increase the mechanical advantage of my rack and pinion steering? If so, what size would the steering wheel need to be compared to my pinion? ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ © EISCO SCIENTIFIC www.eiscosci.com...
- Page 9 These two gears teeth normally touch in a gear train but do not touch in a bike. Pedal Follower gear Chain Primary gear Diagram 5 What allows the driver gear to rotate the follower gear? (The bicycle chain connects the two gears together.) © EISCO SCIENTIFIC www.eiscosci.com...
- Page 10 Small children do not have very much strength. It would be easier to pedal and require less force from a child to ride this bicycle.) © EISCO SCIENTIFIC www.eiscosci.com...
- Page 11 In diagram 5 is a picture of a simple children's bicycle. In a system of gears there is a driving gear (also called a primary gear) and then a follower gear that gets rotated by the driver gear. These two gears teeth normally touch but do not touch in a bike. Diagram 5 -10- © EISCO SCIENTIFIC www.eiscosci.com...
- Page 12 ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ -11- Manufactured by : U.S. Distributor : Eisco Scientific 850 St Paul St, Suite 15, Rochester, NY 14605 Email : www.eiscosci.com www.eiscolabs.com EISCO SCIENTIFIC instructions, content and design is intellectual property of EISCO...
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