Question

A port hole (window) on a submarine has a radius of 30 cm. If the submarine is at a
depth such that the water pressure is 4.04 x 10^5 Pa (about 30 m deep), and the
submarine's air is at atmospheric pressure (use 1.01 x 10^5 Pa), what force must the
surrounding bulkhead (submarine wall) exert on the port hole to keep it in place?

1.14 x 10^5 N toward the water

8.57 x 10^4 N toward the water

1.43 x 10^5 N toward the ship interior

1.14 x 10^5 N toward the ship interior

8.57 x 10^4 N toward the ship interior

Answer 1