ASSIGNMENT ON GEARS

Gears Questions 1. What are gears? ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ 2. What can gears do? ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ 3. Explain the difference between a driving gear and a driven gear. ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ 27

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4. What are the three types of gears discussed in the article “Types of Gears?” Explain each type of gear and what scenarios each one would be most useful. ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ 5. Draw a picture of each type of gear and use arrows to show how it functions.

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6. Explain the difference between how human driven and machine driven gear trains function. Use examples to support your answer. ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ 7. What are the advantages of using gears? ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ 29

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8. Explain how you would have to set up a gear train that is designed to increase speed. ____________________________________________________ ____________________________________________________ ____________________________________________________ 9. Explain how you would have to set up a gear train that is designed to increase force. ____________________________________________________ ____________________________________________________ ____________________________________________________ 10.Draw a picture to show the difference between a gear system designed for increasing speed and increasing force.

11. What is the tradeoff between force and speed in gear systems? ____________________________________________________ ____________________________________________________ ____________________________________________________ 30

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Pulleys, Gears & Us Questions 1. Explain how we rely on pulleys and gears in our daily life. ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ 2. What are the effects of using pulleys and gears on the environment? What can we do to reduce the impact on the environment? ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ 31

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