Concise Physics Class 9 ICSE Solutions for Chapter 5 - Upthrust in Fluids, Archimedes; Principle and Floatation
Q1. What is the Reason for the Floatation of a Ship?
Ans: According to the Archimedes' buoyancy principle, the buoyant force helps to keep the ship in a floating state. The buoyant force is equal to the weight of water at the time of the entrance of a ship into the water.
This is the reason that the buoyant force is responsible for the floatation of ships in the ocean.
Q2. What is the Chance of the Floatation of the Human Body in Water?
Ans: The buoyant force is responsible for the floatation of the human body. The reason is that the density of the human body is proportionate to the density of water. That is why the human body can float inside water or ocean.
Q3. What do you Mean by Archimedes’ Principle (in Class 9 Perspective)?
Ans: The Archimedes’ principle states that the body that is absorbed in a liquid drops its heaviness by a measure equal to the heaviness of the evacuated liquid.
This principle also elaborates that when a body is absorbed in a liquid, an ascendant push acts on it, which is equal to the weight of the evacuated liquid.
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