I have tried it a couple of times but I keep messing up so can someone explain a

Question

I have tried it a couple of times but I keep messing up so can someone explain and go through the steps?

http://session.masteringphysics.com/problemAsset/1383075/6/12.EX06.jpg

The three masses shown in the figure(Figure 1) are connected by massless, rigid rods. Assume that m1 = 250g and m2 = 260g

What is the x-coordinate of the center of mass?

What is the y-coordinate of the center of mass?

I have tried it a couple of times but I keep messing up so can someone explain and go through the steps? The three masses shown in the figure(Figure 1) are connected by massless, rigid rods. Assume that m1 = 250g and m2 = 260g What is the x-coordinate of the center of mass? What is the y-coordinate of the center of mass?

Explanation / Answer

x- coordinate = m1*x1 + m2*x2 + m3*x3 /(m1+m2+m3)

= 250*0 + 100*0 + 260*10 /(100+250+260)

= 4.26 cm

y- coordinate = 250*10 + 100*0 + 260*0 /(100+250+260)

= 4.098 cm

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