Why the force which pushes us up is known as buoyancy? We could give it another name?
Why the force which pushes us up is known as buoyancy? We could give it another name?
When a solid object is immersed partially or completely inside a liquid, it displaces some volume of liquid.
Instead of liquid, if we immerse the object in a lump of clay, it displaces some volume of clay.
In the case of liquid, on removing the object from water, the liquid fills up again the space previously occupied by the object, whereas in the case of clay the space is left as it is. That is why mouldings is possible.
It is clear that , the liquid rushes to fill the space from all sides.
And it is not hard to believe that , even when the object is present inside the liquid, the liquid presses the object from all sides.
However the net force is such as to resist the immersion of the object inside the liquid. This resistive force due to the surrounding liquid and acting upward is named buoyant force.
We can feel this force,when we try to immerse a rubber ball inside a liquid. As soon as we stop pressing the ball, the ball comes to the surface.
Same thing happens in the case of steel ball too. But being heavier, it goes inside the liquid, but by a force less than its weight in air.
The apparent loss of weight is due to the buoyant force.
When we stand on the ground, we are not going into the ground, since the ground opposes that by a force called normal force.
In a spence this is also a buoyant force.
When we stand on water surface, the water pushes us up, but it is not enough to keep us at rest. Buoyant force is less than our weight.
The fluid surrounding an object always tends to fill up the space occupied by the object. The net upward force is buoyant force.
When a solid object is immersed partially or completely inside a liquid, it displaces some volume of liquid.
Instead of liquid, if we immerse the object in a lump of clay, it displaces some volume of clay.
In the case of liquid, on removing the object from water, the liquid fills up again the space previously occupied by the object, whereas in the case of clay the space is left as it is. That is why mouldings is possible.
It is clear that , the liquid rushes to fill the space from all sides.
And it is not hard to believe that , even when the object is present inside the liquid, the liquid presses the object from all sides.
However the net force is such as to resist the immersion of the object inside the liquid. This resistive force due to the surrounding liquid and acting upward is named buoyant force.
We can feel this force,when we try to immerse a rubber ball inside a liquid. As soon as we stop pressing the ball, the ball comes to the surface.
Same thing happens in the case of steel ball too. But being heavier, it goes inside the liquid, but by a force less than its weight in air.
The apparent loss of weight is due to the buoyant force.
When we stand on the ground, we are not going into the ground, since the ground opposes that by a force called normal force.
In a spence this is also a buoyant force.
When we stand on water surface, the water pushes us up, but it is not enough to keep us at rest. Buoyant force is less than our weight.
The fluid surrounding an object always tends to fill up the space occupied by the object. The net upward force is buoyant force.
