II. PROBLEM 2. FORCE ON NORTHERN HALF OF A CURRENT-CARRYING SOLID CYLINDER. An innite solid conducting cylinder is placed along zaxis. Find the net force on \"north ern\" (y > 0) half of the cylinder per unit length. The radius of the cylinder is R, the current density is J. Note the direction of the force. Do halves of the cylinder repel or attract? Useful representation of cylindrical system unit vectors in Cartesian form: Q: : 1' ,. y a: + , W W (1) A y A y = + (p \\/:c2+y2m 33243? CE)