00:02
Okay, so this question gives us a force diagram involving a barge, and it tells us the net force is 6 ,000 along the x -axis to the right, and it wants us to find the tension in each cable.
00:16
And you should see based on symmetry that t1 should equal t2, because it's a perfectly symmetric scenario.
00:25
So we know that the net force in the x direction is equal to positive 6 ,000, but since the force is only in the x direction, we've got no net force in the y direction.
00:46
So now let's set up equations.
00:51
So let's deal with the x direction.
00:58
So it says f net in the x direction is equal to.
01:08
Tension from the first wire in the x direction plus tension from the second layer in the x direction.
01:18
And then we can plug in 6 ,000 for the net force, and we know that's still equal to t1x plus, well, since the tensions are the same, we can just use tension 1 twice...