Which has a greater buoyant force on it, a 31.0-cm3cm3 piece of wood floating with part of its volume above water or a 31.0-cm3cm3 piece of submerged iron

The submerge iron has a greater buoyant force on it

Explanation:

Buoyant force is regarded as the force which is exerted on an object when the object is partly or wholly immersed in a fluid. It can be regarded as that force that is responsible for floating of an object. Buoyant force is one as a result of the differences in pressure that is acting on opposite sides of an object when immersed in a static fluid.

According to Archimedes' principle which states that when a body is fully or partially immersed in fluid, the upward buoyant force that is exerted on that body is proportional to the weight of the fluid that is been displaced by the object

FB= -ρgv

Where FB= buoyant force

ρ= density of fluid

V= volume of fluid

g= acceleration due to gravity

NOTE: from this principle, the magnitude of the buoyant force is proportional to weight of the displaced fluid

✓Volume of both wood and iron=31.0 cm^3

✓the piece of the iron is submerged totally

✓the piece of wood is partially submerged

ANSWER:

The buoyant force that is exerted on the body depends on both the volume of the fluid displaced and the density, but we know that both piece of iron and the wood posses the same volume of 31.0 cm^3 and we also know that the piece of iron displaces more water compare to the wood , simply because the iron is totally submerged, Hence the piece of iron has a greater buoyant force on it.

object 2 because all the other ones are wrong