Pulley+Demonstration+Assignment+Worksheet

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School

Liberty University *

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Course

7TH

Subject

Mechanical Engineering

Date

Dec 6, 2023

Type

pdf

Pages

5

Uploaded by AgentElementCheetah30

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Name Pulley Lab Assignment Pre-lab Questions: Use the information provided in the lab lesson to answer questions #1-8. 1. What is a fixed pulley? (3 points) 2. What is the mechanical advantage of a fixed pulley? (3 points) 3. What is a movable pulley? (3 points) 4. What is the mechanical advantage of a movable pulley? (3 points) 5. What is a block and tackle pulley? (3 points)
6. How do you determine the mechanical advantage of a block and tackle pulley? (3 points) Use this image to answer questions 7 -8. 7. What kind of pulley is this? (5 points) 8. What is the mechanical advantage of this pulley? (5 points) Demonstration/Lab Questions 9. From Video #1, list the masses (in grams) of the weights that will be used. (5 points) https://www.pngwing.com/en/search?q=pulley
Single Pulley Demonstration: Watch Video #2 to answer questions #10-14 10. What type of pulley is this? (5 points) 11. What was the mass of the weight that needed to be lifted (resistance force)? (5 points) 12. What happened when one 250 g weight was added as the effort force? (5 points) 13. What happened when a second 250 g weight was added to the effort force of the pulley? (5 points) 14. What is the mechanical advantage of this pulley? (6 points)
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Double Pulley Demonstration: Watch Video #3 to answer questions #15-22 15. What type of pulley is this? (5 points) 16. What was the mass of the weight that needed to be lifted (resistance force)? (5 points) 17. What happened when 100 g was added as the effort force? (5 points) 18. What happened when one 250 g weight was added as the effort force? (5 points) 19. What is the mechanical advantage of this pulley? (6 points)
20. Additional weights were added to the resistance force. What is the new total mass of the resistance force? (5 points) 21. What happens to the effort force? (5 points) 22. What mass would the effort force need to be in order to lift the resistance force? (5 points)