because buoyancy is inversely proportional to volume so volume of water is more at 0°C so therefore buoyancy will be less.
both law are for density of water
both are for the force
these are relationship
I hope thos answer is useful for you
buoyancy acting on a liquid is equal to the volume of body immersed in the liquid
Buoyancy force is the weight of displayed fluid. The buoyant force given by liquid is directly proportional to the density of that liquid. Buoyant force is equal to the density of the liquid.The less dense a substance is the more buoyancy it will have .
Buoyancy is defined by Archimde's Principle
buoyancy is simply the upward force given by any kind of fluids
buoyancy or upthrust is an upward force exerted by a fluid that opposes the weight of an immersed object
Archimedes principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces and acts in the upward direction at the center of mass of the displaced fluid.
Buoyancy: Buoyancy is the ability of an object to float in a given fluid.
Upthrust: Upthrust is the upward force exerted by a fluid on an object partially or fully immersed in the fluid.
Difference between buoyancy and upthrust:
1) Buoyancy is the ability of the liquid to float an object when it is partially or wholly immersed in the water. This tendency of the liquid depends i=on the density difference of the water and the object.
2) Upthrust is the force exerted by the liquid on the object in upward direction against the weight of the object.
Explanation:The upthrust force and density