The surface of a cylinder of radius (R) and length (L) has a uniform mass distribution (delta)

Question:

The surface of a cylinder of radius $R$ and length $L$ has a uniform mass distribution $\delta$ (the top and bottom of the cylinder are excluded). Use Eq. (11) to find the gravitational potential at a point $P$ located along the axis of the cylinder.

V(P)=-G V(P) = off 8(x, y, z) ds IP - QI LG ff = -G 8(x, y, z) ds (x-a) + (y - b) + (z c)