What is the Buoyancy calculation?
buoyant force can be expressed as:
F(b) = W(air) - W(liquid) = d * g * v
where d is the density of the liquid, g is the acceleration of gravity and v is the volume of the immersed object (or the immersed part of the body if it floats). In this experiment the pan balances will compare masses in grams rather than weights. Since W=mg, the apparent change in mass when submerged is
m - m(apparent) = d(liquid) * v
"The buoyancy of an object depends on its average density and the density of the fluid in which it floats." "A life jacket provides buoyancy for a person who accidentally falls overboard." "Some floatation materials lose buoyancy after a long time in the water." "The buoyancy of salt water is greater than that of fresh water."
The amount of buoyancy an item has is determined by its weight in comparison to its volume (or simply put, its density) The less dense it is, the more buoyant it is. For a full explanation of how buoyancy works go to the related question "What is the buoyancy principle?" in the Related Questions section below.
Can you explain reserve buoyancy Can I say that an open lifeboat has got reserve buoyancy or only an floating object with watertight integrity has reserve buoyancy?
Buoyancy force come from difference in density of the object and the surrounding. Buoyancy of the ship can change from the pay load inside its' space. More load per space reduce the buoyancy. For Balloon, buoyancy is change by increase temperature of gas inside to balloon since increase in temperature would cause gas to expand and had lesser density in its' cavity. In general, buoyancy increase or decrease by changing of density of the object…