Asubmerged spherical body of volume 0.5 m^3 and density equal to half the density of water is moored in the deep ocean with a taut vertical cable 1000 m long. neglecting all hydrodynamic forces, but including the upward buoyancy force on the body, find the tension in the cable and the natural period of this inverted pendulum. comment on how the unsteady force in section 2.11 would affect this period. estimate the horizontal excur- sion of the buoy and the angle of the mooring cable in a steady current of 0.5 knots