[填空题]
One 3.2-kg paint bucket is hanqu*s p9v 4bfg-ging by a massless cord fro1p+zu 7ny1kfzxs p w/,c7lb,f m another 3.2$-\mathrm{kg}$ paint bucket, also hanging by a massless cord, as shown in Fig. 4-44.
(a) If the buckets are at rest, what is the tension in each cord? F1 = F2 = (The top rope is F1 and the bottom rope is F2)
(b) If the two buckets are pulled upward with an acceleration of 1.60 $\mathrm{~m} / \mathrm{s}^{2}$ by the upper cord, calculate the tension in each cord. F1 = F2 =
