A long straight wire carrying a steady current \(I_1\) lies in the plane of a rigid rectangular wire loop carrying a steady current \(I_2\). Two sides of the rectangular loop, each of length \(a\), are parallel to the long wire, and the other two sides, each of length \(b\), are perpendicular to it. The side of length \(a\) closest to the long wire is located a distance \(d\) away, as shown in the diagram. What is the magnitude of the net magnetic force exerted on the rectangular loop by the field of the long wire?