# Another Centre of Mass problem

1. Nov 15, 2005

### suspenc3

Hi, I must be doing something wrong...because i found this question wayyyy too easy.

Two skaters, one with mass 65Kg and the other with mass 40Kg stand on the ice rink holding a pole 10 m long and a negligible mass. Starting from the ends of the pole, they pull themselves along the pole until they meet. How far does the 40Kg skater move?

$$\frac{m2}{m1+m2} d$$

$$xcom=3.8m$$

m2 travels : 10m - 3.8m

m2 travels 6.2m

Is it as easy as this?

Last edited: Nov 15, 2005
2. Nov 15, 2005

### Tubs

Looks like it. Your other one was even easier

3. Nov 15, 2005

### suspenc3

it just doesnt make sence...Our assignments are always difficult

weird...