4.44. Screw http://www.ck12.org
FIGURE 4.90
Vocabulary
- screw: Simple machine that consists of an inclined plane wrapped around a cylinder or cone.
Explore More
Do the simple screw activity described at the following URL, and then answer the questions below.
http://www.fi.edu/qa97/spotlight3/screwdemo.html
- How does the activity model a screw?
- Which part of the screw is the long sloping side of the inclined plane?
- Which dimension of the screw is the same as the height of the inclined plane?
Review
- What is a screw?
- How are screws used?
- Give an example of a screw that is not mentioned in the article.
- Why is the mechanical advantage of a screw always greater than 1?