Question

Write the various factors affecting Buoyant force (any two)

Answer 1

Hint: Archimedes principle is used for explaining the principle behind the immersed objects in the fluids. When a body is immersed in the fluid, the weight of the fluid that displaces will be equal to the force exerted by the fluid in that body. This force is termed as the Buoyant force which opposes the weight of the immersed body acting downwards.

Complete step by step solution
At the depths, the fluid would have high pressure. When the body is immersed to the depths the upward force is acted to raise the body to the top. This buoyant force is against the weight of the body acting downwards. For every body which floats, immersed or sinks in the fluid relates to the buoyant force. If the body’s weight is less than the buoyant force the body will float in the fluid. If the body’s weight is greater than the buoyant force then the body will be immersed in the fluid. When the buoyant force and weight of the body remains the same, the body will be suspended at the depth of the fluid.
The buoyant force will be the sum of all forces acting on the body’s surface. Relating to Archimedes principle, force exerted on the body is equal to the volume of the fluid displaced. Generally, the equation for Buoyant force is expressed as,

Where, is the volume of the body, is the density of the fluid and is the acceleration due to gravity.
Hence the factors affecting the Buoyant force is Volume of the body and the density of the fluid.

Note: The buoyant force will also be equal to the force that we exerted on the body to immerse that body in the fluid. This is related to Newton’s third law of motion. The buoyant force will be in the direction opposite to the direction of force we applied.