Inside the same room, buoyant force is greater on an elephant among a pencil found on the ground. a helium-filled balloon.
The upward force applied to an object that is fully or partially submerged in a fluid is known as the buoyant force. Upthrust is another name for this upward thrust. A body submerged partially or completely in a fluid appears to shed weight, or to be lighter, due to the buoyant force.
An object's volume, not mass, determines how much buoyancy it experiences. Due to this, regardless of the gas density within, two balloons of the same size experience equivalent buoyant forces. The buoyant force on an elephant is significantly greater than the buoyant force on a small helium balloon because the buoyant force is directly proportional to an object's volume.
Only when buoyant forces are greater than the weight of an object does it ascend in the air. All objects experience the buoyant force of air. The weight of the air that the object displaces is the buoyant force.
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