The bent wire $$PQR$$ shown in the figure lies in a uniform magnetic field $$\vec B=3.0\hat i+4.0\hat k\ \text{T}$$. The direction $$\hat k$$ is normal to the plane of the paper and directed towards the viewer. The two straight sections $$PQ$$ and $$QR$$ of the wire each have length $$2.0\ \text{m}$$ and the wire carries a current of $$2.5\ \text{A}$$. Net force on the wire due to magnetic field $$\vec B$$ is