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FAQs on Buoyancy Force and Floatation - Topper Handwritten Notes & Videos for GATE ME - Mechanical Engineering

1. What is buoyancy force?
Ans. Buoyancy force is the upward force exerted by a fluid on an object immersed in it, which opposes the weight of the object. It is responsible for the phenomenon of flotation.
2. How is buoyancy force calculated?
Ans. Buoyancy force is calculated as the weight of the fluid displaced by the object. It can be determined using the equation: Buoyancy force = Weight of fluid displaced = Density of fluid x Volume of fluid displaced x Acceleration due to gravity.
3. What is the principle of floatation?
Ans. The principle of floatation states that an object will float in a fluid if the weight of the object is equal to the weight of the fluid it displaces. This is based on Archimedes' principle.
4. How does the shape of an object affect its buoyancy?
Ans. The shape of an object affects its buoyancy by determining the volume of fluid it displaces. Objects with a larger volume will displace more fluid and experience a greater buoyant force, leading to increased buoyancy.
5. Can an object sink in a fluid if it is less dense than the fluid?
Ans. Yes, an object can sink in a fluid even if it is less dense than the fluid if the object's weight is greater than the buoyant force acting on it. In such cases, the object will sink until it reaches a point where the buoyant force equals its weight, resulting in equilibrium.
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