Wikidata:Property proposal/height of center of mass

height of the center of mass edit

Originally proposed at Wikidata:Property proposal/Generic

Done: height of center of mass (P8497) (Talk and documentation)

Represents	height of center of mass (Q96190444)
Data type	Quantity
Allowed units	meter, etc.
Example 1	Leaning Tower of Pisa (Q39054) → ca. 20 m
Example 2	Dodge Ram B-150, model year 1987 (Q96190452) → 85 cm
Example 3	Alfa Romeo 4C, model year 2013 (Q96190459) → 40 cm

Motivation edit

I thought we already had this. Please help complete the proposal. (Add your motivation for this property here.) --- Jura 10:41, 1 June 2020 (UTC)[reply]

Notified participants of WikiProject Motorsports --- Jura 13:32, 3 June 2020 (UTC)[reply]

Discussion edit

Comment This seems an odd proposal for a property. What items would it possibly be applied to, just buildings? Is it always clear what the vertical reference point is? If qualifiers will be needed anyway, why not just use height (P2048) with applies to part (P518) and/or determination method (P459) qualifiers? ArthurPSmith (talk) 17:57, 1 June 2020 (UTC)[reply]
Weak oppose I must say, this seems very specific, why is height not sufficient? when does it differ, can you give more examples? Germartin1 (talk) 13:00, 3 June 2020 (UTC)[reply]
- @Germartin1: It seems a fairly common measure in engineering, e.g. in automotive and earthquake engineering. w:Automobile_handling#Centre_of_mass_height has more samples. I added 2 from there. I suppose it could be added with height (P2048) and quantity (P1114) and a bunch of qualifiers, but I don't really see an advantage of doing that. Maybe there is one I overlooked. It's never the same as height and I don't think people looking for height in general would want this. --- Jura 13:30, 3 June 2020 (UTC)[reply]
Support Ok, it does seem useful for motor vehicles and the like. ArthurPSmith (talk) 18:31, 3 June 2020 (UTC)[reply]
Support I could also imagine it to be used for taxons. ChristianKl ❪✉❫ 16:37, 8 June 2020 (UTC)[reply]
- Support seems like it:

This distribution of torques along a moving body plays an especially important role in bounding evolution of biological systems. Take, for example, the giraffe in Figure 2. Almost 1/3 of the animal’s mass is extended along the neck. When it moves its head the center of mass shifts dramatically and the animal must have Center of Mass 2the anatomical (and physiological) capacity to handle that. Many features of this animal have evolved as compensations for that center of mass shift including skeletal elements and muscular positioning. Imagine the dramatic change that occurs in the center of mass when the animal simply takes a drink!

--Integrating Biology Experimental Activity Modules with Introductory Physics (Q96971150)

So it varies per individual and as the animal moves, but that can be handled with +- error bars. Arlo Barnes (talk) 06:31, 5 July 2020 (UTC)[reply]

@Jura1, ArthurPSmith, Germartin1, ChristianKl, Arlo Barnes:

Done height of center of mass (P8497) Pamputt (talk) 17:52, 28 July 2020 (UTC)[reply]