An iron needle sinks in water but the ship remains floating. On what principle is it based?

The iron needle sinks in water while the ship remains floating based on Archimedes’ principle; option [B]. This principle states that the buoyant force exerted on an object immersed in a fluid is equal to the weight of the fluid displaced by the object. The ship’s shape allows it to displace a volume of water greater than its own weight, resulting in a net upward force that keeps it afloat. However, the density of iron is greater than that of water, causing the iron needle to displace less water than its own weight, resulting in a net downward force that causes it to sink. Therefore, it is Archimedes’ principle that explains why the ship floats while the iron needle sinks in water. Pascal’s principle relates to pressure in fluids, Kepler’s principle pertains to planetary motion, and the law of gravitation explains the attraction between masses.