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This tag is for questions regarding to torque, which is a measure of the increase in angular momentum over time.

2 votes
1 answer
36 views

In spinning, twist accumulates in the thinnest parts of yarn. Why?

If you're spinning yarn from some kind of fibre, areas of the yarn that are slightly thicker (i.e. the fibres aren't drafted out/pulled apart and stretched out as much) don't twist much while the thin …
Nicholas's user avatar
  • 123
1 vote
0 answers
18 views

Why does twist distribute itself according to the thickness of yarn?

In spinning, a convenient physical reaction happens when you haven't drafted (pulled the fibres apart) enough to make a consistent gauge of yarn. Thinner spots will accumulate more twist, while the tw …
Nicholas's user avatar
  • 123
23 votes
2 answers
3k views

How does a twisted piece of string/yarn wind back on itself? What kinds of forces are respon...

I do a lot of fibrework (carding wool, spinning yarn, weaving, etc.) and I've noticed a funny behaviour that anything long and flexible, which can withstand significant torque exhibits. …
Nicholas's user avatar
  • 123