Chapter 28, Problem 48P

GO A long, rigid conductor, lying along an x axis, carries a current of 5.0 A in the negative x direction. A magnetic field $\stackrel{\to }{\text{B}}$ is present, given by $\stackrel{\to }{B}=3.0\text{<mover accent="true"> <mrow> <mo> i </mo> </mrow> <mo> ^ </mo> </mover>}+8.0x^2\text{<mover accent="true"> <mrow> <mo> j </mo> </mrow> <mo> ^ </mo> </mover>}$ with x in meters and $\stackrel{\to }{\text{B}}$ in milliteslas. Find, in unit-vector notation, the force on the 2.0 m segment of the conductor that lies between x = 1.0 m and x = 3.0 m.