This is a simple machine called a screw.
They are called skew lines. Explanation: In 3 space, parallel lines must never intersect AND must be in the same plane. If they fail to intersect and are in different planes we call them skew lines.
I believe your are talking about a 3D figure called a Mobius strip. It is a strip of paper that has a half-turn in it that causes technically a one sided figure.
A cylinder, yep. Actually lots of other things too, depending on what you call a single curved side. Any two (non-intersecting) planes through a sphere make a "fat cylinder." Think of others, there's more.
This is because the actual mechanical advantage is the actual calculation found after dividing the effort force by the output force. Ideal mechanical advantage is what many people would call an estimate. When estimating mechanical advantage, the numbers are always rounded. This makes actual mechanical advantage less. Sources: Science teacher
This is a simple machine called a screw.
The Twisted blade that helps a plane fly and a ship move is call a propeller.
A twisted pantyhoe.
a spiral galaxy is what you call a "kind" or classificationfor example the milky way galaxy is a spiral galaxy
3 planes together
The inclined plane has been utilized probably billions of times . . . especially if you call screw threads a coiled inclined plane.
A spiral galaxy has the shape of a pinwheel. Our solar system is in a spiral galaxy that we call the Milky Way.
pilots
The milky way, and its a barred spiral galaxy.
a pilot
Stringer
You're probably thinking of the anime and manga series Spiral: Suiri no Kizuna, also known as Spiral: The Bonds of Reasoning.