# Center of Mass Question

1. Oct 6, 2007

### Hexagram1000

The Problem is the following:
One half of a uniform circular disk of radisu 1 meter lies in the xy-plane with its diameter along the y-axis, its center at the origin, and x>0. The mass of the hallf-disk is 3 kg. Find(xcoord of center of mass, y-coord of center of mass)
The equation of the center of mass of the coord is the following:
x coord of center of mass = $$\int$$x * density(x)AreaofSlice(x)dx$$\div$$$$\int$$density(x)dx

or
x coord = $$\int$$massofslice * x $$\div$$$$\div$$ massofslice

How would you do this problem

2. Oct 6, 2007

### mjsd

new to PF?

it is more than just how we would do this problem but we wish to know how you may tackle it too.

hint: perhaps first sort out what those entries in the equation mean and then go fromt there