point -> mass center
point -> mass center

oliverlee/sympy,chaffra/sympy,bukzor/sympy,Davidjohnwilson/sympy,amitjamadagni/sympy,maniteja123/sympy,jaimahajan1997/sympy,AunShiLord/sympy,Designist/sympy,cccfran/sympy,asm666/sympy,farhaanbukhsh/sympy,pbrady/sympy,MechCoder/sympy,liangjiaxing/sympy,aktech/sympy,kevalds51/sympy,sunny94/temp,abhiii5459/sympy,yukoba/sympy,lidavidm/sympy,kaushik94/sympy,toolforger/sympy,dqnykamp/sympy,wanglongqi/sympy,saurabhjn76/sympy,MechCoder/sympy,mafiya69/sympy,meghana1995/sympy,lidavidm/sympy,VaibhavAgarwalVA/sympy,diofant/diofant,cswiercz/sympy,beni55/sympy,kumarkrishna/sympy,cswiercz/sympy,srjoglekar246/sympy,Curious72/sympy,yukoba/sympy,Sumith1896/sympy,sunny94/temp,bukzor/sympy,Arafatk/sympy,Designist/sympy,sahmed95/sympy,VaibhavAgarwalVA/sympy,MridulS/sympy,sahilshekhawat/sympy,Gadal/sympy,mcdaniel67/sympy,grevutiu-gabriel/sympy,Titan-C/sympy,meghana1995/sympy,flacjacket/sympy,asm666/sympy,drufat/sympy,Titan-C/sympy,jamesblunt/sympy,pbrady/sympy,Davidjohnwilson/sympy,Vishluck/sympy,abhiii5459/sympy,farhaanbukhsh/sympy,debugger22/sympy,jbbskinny/sympy,kaushik94/sympy,liangjiaxing/sympy,ChristinaZografou/sympy,lindsayad/sympy,toolforger/sympy,rahuldan/sympy,Sumith1896/sympy,moble/sympy,jerli/sympy,garvitr/sympy,garvitr/sympy,AunShiLord/sympy,garvitr/sympy,emon10005/sympy,asm666/sympy,yashsharan/sympy,aktech/sympy,yashsharan/sympy,yukoba/sympy,wanglongqi/sympy,kmacinnis/sympy,shikil/sympy,MridulS/sympy,rahuldan/sympy,atreyv/sympy,Arafatk/sympy,debugger22/sympy,rahuldan/sympy,beni55/sympy,Gadal/sympy,amitjamadagni/sympy,Davidjohnwilson/sympy,Titan-C/sympy,jerli/sympy,sampadsaha5/sympy,grevutiu-gabriel/sympy,AkademieOlympia/sympy,cccfran/sympy,vipulroxx/sympy,dqnykamp/sympy,meghana1995/sympy,sahmed95/sympy,souravsingh/sympy,farhaanbukhsh/sympy,hargup/sympy,maniteja123/sympy,lindsayad/sympy,shikil/sympy,kaichogami/sympy,saurabhjn76/sympy,vipulroxx/sympy,abhiii5459/sympy,chaffra/sympy,atsao72/sympy,ga7g08/sympy,Shaswat27/sympy,Vishluck/sympy,sampadsaha5/sympy,saurabhjn76/sympy,AunShiLord/sympy,mcdaniel67/sympy,souravsingh/sympy,Shaswat27/sympy,jbbskinny/sympy,toolforger/sympy,ahhda/sympy,Arafatk/sympy,mafiya69/sympy,emon10005/sympy,Curious72/sympy,Mitchkoens/sympy,skirpichev/omg,pandeyadarsh/sympy,vipulroxx/sympy,kaichogami/sympy,hargup/sympy,kevalds51/sympy,Shaswat27/sympy,wyom/sympy,Sumith1896/sympy,bukzor/sympy,kmacinnis/sympy,iamutkarshtiwari/sympy,kmacinnis/sympy,ChristinaZografou/sympy,dqnykamp/sympy,aktech/sympy,drufat/sympy,sahilshekhawat/sympy,Designist/sympy,sahmed95/sympy,oliverlee/sympy,moble/sympy,atsao72/sympy,AkademieOlympia/sympy,maniteja123/sympy,sunny94/temp,wyom/sympy,madan96/sympy,AkademieOlympia/sympy,abloomston/sympy,MridulS/sympy,sampadsaha5/sympy,ChristinaZografou/sympy,madan96/sympy,sahilshekhawat/sympy,cswiercz/sympy,grevutiu-gabriel/sympy,shipci/sympy,shipci/sympy,kaichogami/sympy,pandeyadarsh/sympy,emon10005/sympy,shikil/sympy,skidzo/sympy,shipci/sympy,chaffra/sympy,Vishluck/sympy,hrashk/sympy,wanglongqi/sympy,hrashk/sympy,liangjiaxing/sympy,hrashk/sympy,postvakje/sympy,drufat/sympy,Mitchkoens/sympy,iamutkarshtiwari/sympy,jbbskinny/sympy,atreyv/sympy,jaimahajan1997/sympy,pbrady/sympy,iamutkarshtiwari/sympy,ga7g08/sympy,skidzo/sympy,jaimahajan1997/sympy,cccfran/sympy,kaushik94/sympy,moble/sympy,mafiya69/sympy,atreyv/sympy,jamesblunt/sympy,abloomston/sympy,lindsayad/sympy,VaibhavAgarwalVA/sympy,Mitchkoens/sympy,oliverlee/sympy,MechCoder/sympy,jerli/sympy,kumarkrishna/sympy,ahhda/sympy,atsao72/sympy,skidzo/sympy,kumarkrishna/sympy,souravsingh/sympy,debugger22/sympy,lidavidm/sympy,ahhda/sympy,mcdaniel67/sympy,pandeyadarsh/sympy,Gadal/sympy,yashsharan/sympy,kevalds51/sympy,abloomston/sympy,wyom/sympy,postvakje/sympy,jamesblunt/sympy,hargup/sympy,postvakje/sympy,beni55/sympy,madan96/sympy,ga7g08/sympy,Curious72/sympy