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FAQs on Handwritten Notes: Buoyancy and Floating/Flotation - Fluid Mechanics for Mechanical Engineering

1. What is the principle of buoyancy?
Ans. Buoyancy is the upward force exerted by a fluid that opposes the weight of an immersed object. It is based on Archimedes' principle, which states that the buoyant force acting on an object is equal to the weight of the fluid displaced by the object.
2. How does the density of an object affect its ability to float?
Ans. An object will float if its density is less than the density of the fluid it is placed in. If the density of the object is greater than the density of the fluid, it will sink. The relationship between the densities determines whether an object will float or sink.
3. What factors affect the buoyant force acting on an object?
Ans. The buoyant force acting on an object is determined by the volume of the object submerged in the fluid and the density of the fluid. The greater the volume of the object submerged and the density of the fluid, the greater the buoyant force.
4. How can the concept of buoyancy be applied in real-life engineering applications?
Ans. Buoyancy is utilized in designing ships, submarines, hot air balloons, and other flotation devices. Engineers use the principles of buoyancy to ensure these objects float or sink as desired and to calculate the loads they can carry.
5. Can an object be neutrally buoyant? If so, what does it mean?
Ans. Yes, an object can be neutrally buoyant if its density is equal to the density of the fluid it is placed in. In this case, the object will neither sink nor float but remain suspended at a certain depth in the fluid. This concept is often used in designing components for underwater equipment.
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