(adsbygoogle = window.adsbygoogle || []).push({}); =>Two skaters, one of 65kg e another of 40kg, are in a ice stadium and are holding the extremities of a rope of 10meters of negligible mass. They pull each other until they stay close to each other. What distance the 40kg skater "walked"?

My attempt:

Well, there aren´t external forces acting here, so the center of mass doesn't move... that's the theory but i'm failing when I try to aply this concept.

If I try to find the center of mass I find this number for it: (x1*m1+x2*m2)/(m1+m2)=>(0*65+10*40)/(65+40) =>Center of Mass=3,8m

And now... what is the next step?

Thanks in advance,

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# Homework Help: (Center of Mass) How much the skater walked?

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