Maybe we can tie these topics together.

I've heard people talk about AC and DC in the context of mechanical force equations. For example with mass/spring oscillators. These problems can be analyzed the same way as circuits and you can have AC and DC analysis. How strange is it to talk about alternating and direct current in that context?

But the OP's query is based on semantics and not laws of electricity

 

I see it as an English language issue. Let's go back to high school and start English grammar all over again.
The Art of Language.

 

But the OP's query is based on semantics and not laws of electricity

Well, yes. But, is it semantically correct to use electricity terms in the context of a mechanical problem? If I describe an AC component of a force, or a DC component of a force, does this make any real sense? What is an "alternating current force" mean in the context of a mechanical problem? It means nothing if interpreted literally, but most engineers and scientists will understand what you mean if you talk about AC and DC components of a signal or any variable quantity.

 

If I describe an AC component of a force, or a DC component of a force, does this make any real sense?

Is "reciprocating" the analogous term in mechanics?

 

Is "reciprocating" the analogous term in mechanics?

As my confession shows, I'm not the best person to ask, but it seems reasonable to me.

Now that I think about it, I own a reciprocating saw powered by 120VAC.

 

Actually, the terminology being used can be considered an engineering 'slang' and can be ignored upto some extent as it does not affect the laws of electricity. Argument on semantics is futile.

 

As I understand the term a reciprocating mechanism is one which converts linear motion (to and fro) into circular motion (eg at a shaft) or vice versa.

Such mechanisms include rack and pinion, scotch yoke, eccentric cam, piston/con rod.

 

To draw analogies between mechanical and electrical systems, starting a new thread seems a sensible option!