Where is the center of mass located for an irregular object?

[huybinhs]

Homework Statement

a) Place the origin, O, at the lower left. If the positive x-axis points to the right along the page, what is the x coordinate of the center of mass in terms of a?

b) If the positive y-axis points up along the page, what is the y coordinate of the center of mass in terms of a?

The Attempt at a Solution

Could u guys help me to start? Thanks so much!

 

[ehild]

Cut the irregular object to regular pieces (squares). Place the mass of each piece into the centre and find the CM of these point masses.

ehild

 

[huybinhs]

Got it! Thanks! ;)