Cómo calcular la densidad de un objeto con el principio de Arquímedes

A very interesting physics problem related to Archimedes' principle, apparent weight, and the density of an object. The problem states that an object weighs 72 N in air and that, when submerged in water, its apparent weight is 48 N. We also know the density of water: 1000 kg/m³. From this data, we first calculate the buoyant force exerted by the water on the object and then use the relationship between the actual weight, buoyant force, and densities to find the object's density. This exercise is very useful for understanding why objects appear to weigh less when submerged in a liquid. The key is that the liquid exerts an upward force called buoyancy. This force reduces the apparent weight we measure in the water. The fundamental idea is: apparent weight = actual weight − buoyant force Therefore: buoyant force = actual weight − apparent weight In this case, the buoyant force is 24 N. Next, we compare the weight of the object with the buoyant force of the displaced water. Since the volume of the object coincides with the volume of displaced water, we can simplify the volume and gravity, leaving us with a direct relationship between densities. The final result is that the density of the object is: 3000 kg/m³ A perfect exercise to practice Archimedes' principle, the concept of apparent weight, density, and the physical interpretation of the forces acting on a submerged body. VIDEO CHAPTERS 00:00 Problem statement: actual weight and apparent weight 00:20 Why an object appears to weigh less underwater 00:34 Forces acting on the submerged object 00:44 Buoyancy and its physical origin 01:02 Formula for apparent weight 01:26 Solving for buoyancy 01:58 Calculating buoyancy: 72 N − 48 N 02:20 Relationship between weight, mass, density, and volume 03:25 What quantities are involved in buoyancy? 04:05 Volume of the object and volume of displaced water 04:56 Dividing weight by buoyancy to simplify 05:21 Relationship between the density of the object and the density of water 05:46 Final calculation of the object's density 06:10 Result: 3000 kg/m³ More physics exercises from Fluid Mechanics:    • FÍSICA DE FLUIDOS   Here's the lesson in text format: https://fisica-con-juan.blogspot.com/... #fisicaconjuan #fisica #fisicadefluidos