One 3.5 kg paint bucket is hanging by a massless cord from another 3.5 kg paint bucket, also hanging by a massless cord.
(a) If the buckets are at rest, what is the tension in each cord?
(b) If the two buckets are pulled upward with an acceleration of 1.80 m/s2 by the upper cord, calculate the tension in each cord.
I'm not sure on what equations to use or anything.
The Attempt at a Solution
Everything I've been doing is wrong. I tried adding it up and dividing by gravity, then subtracting and dividing by gravity and I don't know what else to do.