Center of Mass with Circle that has a Cut Out

[SerhanFT9]

Homework Statement

Find the center of mass of a 5kg circle with a radius of 4m with a circle that has a radius of 2m cut out from it.

Homework Equations

The Attempt at a Solution

To be completely honest, I do not know where to start. I do know how to find the center of mass when you have points on a plane. But I cannot seem to find the connection between this and that.

Thank you

 

[tiny-tim]

Welcome to PF!

Hi SerhanFT9! Welcome to PF!

You can treat the hole as a solid of negative mass.