In uniform circular motion, total acceleration of an object in a circular path is equal to the radial acceleration. Due to the presence of tangential acceleration in non uniform circular motion, that does not hold true any more. To find the total acceleration of an object in non uniform circular, find the vector sum of the tangential acceleration and the radial acceleration.
Pyrite is a polymorph of marcasite, which means that it has the same chemistry, FeS 2, as marcasite; but a different structure and therefore different symmetry and crystal shapes. Pyrite is difficult to distinguish from marcasite when a lack of clear indicators exists.
Did you know... Fire was pyriteâs most prominent gift to human society. Sparks are created when pyrite is struck against metal or a hard surface and this was one of the earliest methods humans discovered to create flame. Pyriteâs name comes from the Greek phrase, âpyrite lithos,â which means âstone which strikes fire.â Its brilliant metallic luster and brassy to golden color not only makes pyrite stand out from its surrounding rock, but has also caused it to be mistaken for gold by people unfamiliar with the real thing.