A. Well, the top link of the chain is a real overachiever. It carries all the weight, literally! So the tension in the top link can be found by simply adding up the weight of the bucket (W1 = 255 N) and the weight of the chain (W2 = 105 N). That gives us a grand total of 360 N. Can you believe the pressure it must be under? Talk about a heavy workload!
B. Now let's move on to the middle link of the chain. As the bucket is being lifted, the force required to accelerate the bucket and the chain is being distributed among the links. Since the bucket and the middle link are in the middle of this chain reaction, they share the load equally. So the tension in the middle link is half of the total weight, which is 180 N. It's like being a middle child - always stuck in the middle of things!
C. Finally, we have reached the bottom link of the chain. This poor link has the least amount of weight to carry since all the other links are above it. So the tension in the bottom link is simply the weight of the chain, which is 105 N. It's like the anchor of the chain, keeping everything grounded!
Remember, though, that these are ideal situations and don't take into account any friction or external forces. Chaining together these facts was a lot of fun, but don't try to juggle too many chains at once!