Expansion of a Circular Loop with Perpendicular Forces

[sArGe99]

Consider a circular loop. If I were to apply forces at all points on the loop such that the forces are perpendicular to it and in the same plane as the loop, the net force experienced by the loop equals zero. But it expands. The loop expands even when no work is being done on it. How can it be explained?

 

[syedgj]

perhaps because it is only at the CENTER of the circle where the net force is 0, and not the edges, which are the ones expanding..