An earth satellite which moves in the elliptical equatorial orbit shown has a velocity v...

An earth satellite which moves in the elliptical equatorial orbit shown has a velocity v in space of 17 970 km/h when it passes the end of the semiminor axis at A. The earth has an absolute surface value of g of 9.821 m/s2 and has a radius of 6371 km. Determine the radius of curvature of the orbit at A.