A screw is made up of ___ wrapped around a post or rod.
a. treads
b. springs
c. threads
d. strings
Answers
Answered by
4
Answer:
D. Strings
Explanation:
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Answered by
1
Answer:
A screw is made up of threads wrapped around a post or rod.
Explanation:
- A machine is any device that uses the mechanical advantages to change the force for improved and smooth working efficiency.
- There exist a variety of simple machines such as a pulley, wedge, screw, inclined plane, etc. without which there would not be any high-tech inventions.
- A screw is an extremely useful yet simple machine. It usually consists of a circular cylinder surrounded by spirally arranged threads.
- Such a spiral thread arrangement resembles a helical rib.
- This not only helps to hold the wood, plastic or electronics but also provides leverage or mechanical advantage by converting the circular turning motion into a linear forward and backward motion.
- This fits well into the threaded hole or wrapped around a post or a rod which is useful in holding things together or lifting heavy and tightening things.
Hence option c. threads is correct.
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