Linear momentum: Navier-Stokes *P4.26 Curvilinear, or streamline, coordinates are defined in radius of curvature R. Euler's frictionless momentum T av dt av +V= = ds -V- V 1 dt R Show that the integral of Eq. (1) with respect to s is none other than our old friend Bernoulli's equation (3.54). - n P4.26 Fig. P4.26, where n is normal to the streamline in the plane of the equation (4.36) in streamline coordinates becomes Streamline 1 p ds +8s == S, V 0 X+ R + En (1) (2)