Question

When a body was placed in a liquid it remained in the same position. Why?

Answer 1

Answer:

Archimedes Principles

Archimedes, the Ancient Greek scientist first stated the principle of floatation. According to him, all the objects placed in a liquid experience an upward force which allows the body to float if it displaces water with the weight equal to the weight of the body. This upward force is known as buoyant force and the law is known as the law of buoyancy. Mainly, floatation depends upon the density. If an object has a density less than the density of water, it floats. Like, leaf of a plant floats on the water because the density of leaf is less than the density of water. A stone thrown in water sinks because the density of stone is more than the density of water.

Have you ever thought that a ship weighing several tons floats while a needle sinks? This can be explained as follows: A ship is made up of iron and steel, but it has a lot of space filled with air. This causes the ship to displace water with a weight equal to the weight of the ship. On the other hand, the needle displaces more water than its weight and hence it sinks.

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Answer 2

When a body was placed in a liquid it remained in the same position due to Archimedes principle.

• Any object inside a fluid experiences an upward force that causes the body to float when it pushes the water with a weight equal to that of the body.
• This upward force is known as the buyount force and this law is called the law of the buoyant force.
• The principle of Archimedes states that "the buoyant force acting on an object immersed in a completely or partially immersed liquid is equal to the weight of the displaced liquid."
• Archimedes' principle is very important law of physics in fluid mechanics. It was formulated by Archimedes.
• A liquid or a solid particle completely or partially immersed in a liquid is lifted with a force equal to the weight of the liquid displaced by this object.
• The principle of Archimedes allows us to calculate the buoyancy of any floating body which is immersed in a liquid.
• The downward force on an object is its weight. The lift or buoyancy force on an object is determined by the principle of Archimedes.
• Therefore, the total force acting on an object is the difference between the magnitude of the buoyant force and its weight.
• If the resulting force is positive then the object will float. If it's negative, the object sinks. If zero, then the object is neutral.
• Simply putting, Archimedes' principle states that "when an object is partially or completely immersed in a fluid, it experiences a weight loss equal to the weight of the fluid displaced by the submerged body part."

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