Small Building Exercises to learn the Basics of Construction
Pulley Stystems
Pullies have similar properties to gears. Pullies, however allow slippage under heavy load.
Using the base from our Gear lesson, build the following configurations and answer the questions.
1. What is the Pulley Ratio for the configuration below.
2. Does the output shaft (red rod) spin faster, slower, or the same as the input shaft (Crank handle)?
3. What is the Pulley Ratio for the configuration below.
4. How does the action of the output shaft differ from #1 above?
5. What is the Pulley Ratio for the configuration below.
6. Does the output shaft (red rod) spin faster, slower, or the same as the input shaft (Crank handle)?
7. What is the Pulley Ratio for the configuration below.
8. Does the output shaft (red rod) spin faster, slower, or the same as the input shaft (Crank handle)?
Don't take this apart...
Set it aside because the base will be used in the Pushrod/Cam lesson And the Gear lessonDon't forget to finish the gear lesson with Bevel Gears.
Pulleys continued
Build the configuration below and answer questions 9 and 10.
9. What is the Pulley Ratio for the configuration below.
10. Note how the input and output shafts are 90 degrees from each other. What "real life" application could this be used for?
Back to top