The wire RS is fixed, but PQ is free to move. The wire PQ will have

Magnetic field produced by I1 is μ0I12πr and force experience by I2 is I2lB but B is changing along the wire as it depends on the distance fromI1. So force experience by I2 has different magnitude at different point. So it will have a translational as well as a rotational motion also and it will have a clockwise rotation and simultaneously moves up.