00:01
In problem 64, we want to look at the forces in these members here, so we'll make this cut.
00:09
Okay, so basically on the other side, but they won't be equal because, again, there's not symmetry here.
00:16
If we took this load and moved it over here, then we'd expect the loads in this member and this member to be equal.
00:22
Likewise, basically we expect symmetry about here.
00:26
But because this load is acting over on this side and not here, we don't.
00:30
We won't expect symmetry.
00:33
So we make the cut and again we expose these four unknowns and we can see that again these two have to be equal opposite.
00:47
These two actually have to sum to zero because this was 12 kips and this was 12 kips so these cancel out which means that these have to sum to zero...