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u r familiar with the definiton of centre of mass na point where the whole mass seems to be concentrated ! its mathematically given by integral r.dm (think abt symbols) r is the position vector of the choosen mass element the mass of this element is given by mass distribution x length(or area or volume) ! hmm now i cant type without symbols u nudge me and ill say how to find centre of mass etc,ill definitely reply ok cheers but go throuhg the standard book lyk hc verma or arrihant i said in general language hope u atleast understood sum of my words
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