00:01
All right, since we were only given one mass, i'm assuming there was a picture with the other two masses included, but since i only have one mass to work with, i'm just going to solve this problem generically, and you can plug in the masses when you have them.
00:18
So in this case, we have our three rigid masses, and they're each separated, or three masses separated by two rigid rods, each five meters long.
00:27
And we know that this mass is the location of the axis of rotation.
00:37
And so we need to find the center of mass from here.
00:41
The center of mass equation can be found by taking the moments around the axis of rotation.
00:47
So x1m1 plus x2m2 plus x3m3, where that's these locations.
00:54
And then dividing that by the total mass.
00:58
Which would be the total mass at the center of mass...