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Summary
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For this science project you will need to develop your own experimental procedure. Use the information in the summary tab as a starting place. If you would like to discuss your ideas or need help troubleshooting, use the Ask An Expert forum. Our Experts won't do the work for you, but they will make suggestions and offer guidance if you come to them with specific questions.
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If you want a Project Idea with full instructions, please pick one without an asterisk (*) at the end of the title.
Abstract
How much force is required to advance a lag bolt (large wood screw with a hex-shaped head) into a piece of wood? You can measure the force by using a spring scale attached to the handle of ratchet. Pull on the spring scale until the bolt starts to turn, and note the required force from the spring scale. There are many potential experiments you could try. Think about answering the following questions: How does the force change as the bolt advances deeper into the wood? Why? How does the required force change as the diameter of the pilot hole is changed? Why? Can you change the required force by rubbing the bolt's threads with soap or wax? (Coyle, 2005)Bibliography
Coyle, C.P., 2005. "Some Variables Affecting the Torque Required to Turn a Screw," California State Science Fair Project Abstract [accessed April 18, 2006] http://cssf.usc.edu/History/2005/Projects/J0205.pdf.
Ask an Expert
Do you have specific questions about your science project? Our team of volunteer scientists can help. Our Experts won't do the work for you, but they will make suggestions, offer guidance, and help you troubleshoot.
Global Connections
The United Nations Sustainable Development Goals (UNSDGs) are a blueprint to achieve a better and more sustainable future for all.
This project explores topics key to Industry, Innovation and Infrastructure: Build resilient infrastructure, promote sustainable industrialization and foster innovation.
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Cite This Page
General citation information is provided here. Be sure to check the formatting, including capitalization, for the method you are using and update your citation, as needed.MLA Style
Science Buddies Staff.
"The Turn of the Screw." Science Buddies,
7 May 2021,
https://www.sciencebuddies.org/science-fair-projects/project-ideas/ApMech_p032/mechanical-engineering/turn-of-the-screw?class=AQW0SbgRd4KI_yiijOMUC6MDKL-yyR2pGA3BmJYNFpydKRIGdhNt1QHQIUKWw7B2zddBy5_Xv0cC5NmDmyZSoQPbQO7sK7oOJi47Hru9LgAQ9w.
Accessed 25 Apr. 2024.
APA Style
Science Buddies Staff.
(2021, May 7).
The Turn of the Screw.
Retrieved from
https://www.sciencebuddies.org/science-fair-projects/project-ideas/ApMech_p032/mechanical-engineering/turn-of-the-screw?class=AQW0SbgRd4KI_yiijOMUC6MDKL-yyR2pGA3BmJYNFpydKRIGdhNt1QHQIUKWw7B2zddBy5_Xv0cC5NmDmyZSoQPbQO7sK7oOJi47Hru9LgAQ9w
Last edit date: 2021-05-07
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