Question

Ships and submarines works on the principle/law of

• A. Newton law of motion
• B. Archimedes principle
• C. Bernoulli's principle
• D. None of the above

Answer 1

Answer: (B)

Archimedes principle

Archimedes' principle states that the upward buoyant force acting on the body is equal to the weight of the fluid it displaces. It has the following applications-

Submarine:

A submarine has a large ballast tank, which is used to control its position and depth from the surface of the sea. A submarine submerges by letting water into the ballast tank so that its weight becomes greater than the buoyant force. Conversely, it floats by reducing water in the ballast tank.-thus its weight is less than the buoyant force.