A Cylinder, Semicircular in Cross-Section, Is 10 M Long and 5.0

Multiple Choice

A cylinder, semicircular in cross-section, is 10 m long and 5.0 m in radius. It is completely submerged, with its flat bottom side horizontal and 8.0 m below the water surface, as shown in the figure. What is the magnitude of the net force on the curved upper surface of the half-cylinder? Neglect atmospheric pressure.

A) 2.0 × 10⁶ N
B) 2.5 × 10⁶ N
C) 3.0 × 10⁶ N
D) 3.5 × 10⁶ N
E) 4.0 × 10⁶ N