# Center of mass and distance

1. Dec 10, 2003

### pringless

A circular hole of diameter 11.1 cm is cut out of a uniform square of sheet metal having sides 22.2 cm, as in the figure. What is the distance between the center of mass and the center of the sqaure?

i need some serious help with cm, i dont get this at all.

2. Dec 10, 2003

### himanshu121

U might consider The removed part as negative mass

Last edited: Dec 10, 2003
3. Dec 10, 2003

### himanshu121

Where is the circular hole located (no fig shown)

If it is removed from centre than the CM wont change

4. Dec 11, 2003

### pringless

top right corner of the sqaure

5. Dec 11, 2003

### himanshu121

since considering Centre of square as origin

$$X_{cm}= - \frac{\pi 11.1}{32}$$
$$Y_{cm}= - \frac{\pi 11.1}{32}$$

6. Oct 14, 2004

### jakeman4

where did the 32 come from?