In the following figures (a) and (b), all the surfaces are smooth, string is massless and pulley is ideal. The mass of the rope is 'm' in both the cases (assume both the systems start from rest)

             

If ${\text{T}}_{\text{1}}\text{and}{\text{T}}_2$ be the tensions at the mid-points of the ropes in fig(a) and fig(b) respectively, then ${\text{T}}_{\text{1}}:{\text{T}}_{\text{2}}$ is