Under the most common set of assumptions, it's D.
In A, the post will react exactly the force the horse pulls with until that force breaks the post, presumably after the rope breaks.
In B, the second horse is providing the same tension as the first horse, so it is equivalent to A.
In C, you have 2x the force, but you have 2x the rope, so the tension is the same. The post will react 2x the force, assuming it doesn't break.
I'm not sure why they've included this in a SolidWorks test.
i believe the FEA test also tests fundamentals of mechanical engineering
they have a few of these questions
Actually the answer is A, since you have the farmer and the horse pulling.
In B there is only one horse's force on the rope, so you have an acceleration
and C the farmer and two horses forces are split between two ropes, so you have a horse and 1/2 a farmer on each rope.
In B the two horses are pulling in each opposite direction. "Each horse pulls with the same force".
I go for B, where the rope is most likely to break.
Heh. Well, I did write, "under the most common set of assumptions". Here's why I think my assumptions are more plausible:
1. The Farmer's putative load path is through the horse's head, neck and body. Unless the farmer is pulling so hard that the horse has become suspended by the rope, the horse's hooves are reacting a far greater force than the farmer can provide. The farmer's force will be subtracted from the hoof reaction, but will not affect the force on the rope at all. If the horse is suspended by the rope and it's head, it's going to die, so the problem will be time-dependent.
2. Farmers don't pull horses, they drive them or guide them. You can't pull a horse.
3. The force of a farmer is negligible compared to the force of a horse.
4. Under your set of assumptions, B and C are not static.
5. I'm pretty sure the OP already put it in and it's correct.
Yes I agree completely that the most correct answer is D. I was just having some fun with the question because it is depicted or controlled poorly. Having the farmer included in the images introduces another variable, for which there is no information given.
Do the FBD for each case and it will become self-evident.