Pulley+Demonstration+Assignment+Worksheet
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Liberty University *
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Course
7TH
Subject
Mechanical Engineering
Date
Dec 6, 2023
Type
Pages
5
Uploaded by AgentElementCheetah30
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)
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This is a question based on the text book ‘’Mechanics of Materials’’ , please reply detail solution with instructions.(This is not a graded assignment. It's just a previous homework which I have finished and wanted to know the solution.)
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Required information
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
The loading for a beam is as shown in the figure, where F1= 19 lb, F2= 20 lb, F3= 35 lb, F4= 2O Ib, and F5 = 15 lb.
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F2
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F4
F5
O B
6 in 8 in.-8 in. -6 in.-
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