Talk:Angular displacement

The big wheel has a diameter of 2 cm, and rotates at 4 rad.s-1. The small wheel has a diameter of 5mm. In 8 s what is its angular displacement?

Image needs replacement

Hello all...

An image used in the article, specifically Image:Angulardisplacement1.jpg, has a little bit of a licensing issue. The image was uploaded back when the rules around image uploading were less restrictive. It is presumed that the uploader was willing to license the picture under the GFDL license but was not clear in that regard. As such, the image, while not at risk of deletion, is likely not clearly licensed to allow for free use in any future use of this article. If anyone has an image that can replace this, or can go take one and upload it, it would be best.

You have your mission, take your camera and start clicking.--Jordan 1972 (talk) 22:03, 29 September 2008 (UTC)[reply]

Possible Mistake: In this article, at the end it is written that angular displacement is not a vector quantity even if it has direction and magnitude.....Don't u think its kind of a contradictory statement????.....because if something has direction and magnitude its bound to be a vector quantity and hence it should obey the Commutative Law.....

Daniyal Ibrar.116.71.216.36 (talk) 08:18, 20 September 2009 (UTC)[reply]

Daniyal was right. It is obvious that angular velocity and angular displacement are vectors, and that addition of two angular displacements is ordinary vector addition and is commutative. There is a non-commutative operation that combines two angular displacements, corresponding to composing two rotations. It is not helpful to start referring to that operation as "addition". Buster79 (talk) 11:07, 6 May 2013 (UTC)[reply]

object, body

what is the difference between an object and a body? The article should settle on consistent terminology.

Also, what does the statement "the motion cannot simply be analyzed as a particle" mean, if anything? What is a particle? If it has some specialised meaning, it either should not be in the lede (but in a more specialised section), or should be linked. 188.143.76.147 (talk) 14:52, 2 December 2018 (UTC)[reply]