Why do needles and pins have pointed tip?

Asked by Topperlearning User | 5th Feb, 2015, 05:24: PM

Expert Answer:

Pressure is inversely proportional to area. A pointed tip will have a very small area. So, when we try to sew or pin up the papers, we apply force over a very small area, and this results in a large pressure. This makes it easy to sew or pin up the papers.

Answered by  | 5th Feb, 2015, 07:24: PM