Cause without byoyancy, some sailors wouldn't be sailors anymore.
Gravity is needed for buoyancy as if there was no gravity then there would be no need for buoyancy, the need for buoyancy is to counteract the pull of gravity so you can stay at the surface of a liquid such as water. If there was no gravity then there would be no need to counteract it. I hope this the answer you needed. What if there is a ball of water in space and a cork made dof wood is inserted carefully into the ball. Would it 'rise' from the center of the ball towards the surface or not???
If you float well the buoyancy is positive (your mass is less than the mass of the displaced liquid (water?), if you just manage to float or at least don't sink at any great speed, the buoyancy is neutral (your mass equals the mass of the liquid displaced).
Three types of buoyancy are positive buoyancy, negative buoyancy, and neutral buoyancy. Positive buoyancy occurs when an object is lighter than the fluid it displaces, causing it to float. Negative buoyancy happens when an object is heavier than the fluid it displaces, causing it to sink. Neutral buoyancy is when an object has the same density as the fluid it displaces, resulting in it neither sinking nor floating.
Buoyancy is useful for objects or substances that are floating or submerged in a fluid. It allows boats and submarines to float or stay afloat in water, and also helps hot air balloons and blimps to rise and stay airborne. Understanding buoyancy is important for designing structures that need to float or be submerged in fluids.
Wear the PFD in shallow water or a swimming pool.
You can determine your buoyancy by observing whether you float, sink, or stay suspended in water. If you float on the water's surface, you have positive buoyancy. If you sink, you have negative buoyancy. When you remain suspended at a certain depth, your buoyancy is neutral.
Buoyancy compensators are typically used for compensating things such as buoyancy things. These things need to be compensated very often to work properly.
Mass of dock. Initial buoyancy. Buoyancy of additional foam.
Gravity is needed for buoyancy as if there was no gravity then there would be no need for buoyancy, the need for buoyancy is to counteract the pull of gravity so you can stay at the surface of a liquid such as water. If there was no gravity then there would be no need to counteract it. I hope this the answer you needed. What if there is a ball of water in space and a cork made dof wood is inserted carefully into the ball. Would it 'rise' from the center of the ball towards the surface or not???
Buoyancy
Buoancy is the upward force that keeps things floating. I guess it doesn't need surface tension.. http://en.wikipedia.org/wiki/Buoyancy
Buoyancy is used for many life examples, submarines, swimmers would like to know about it, and the army would use it. Those are some life examples that of real life that buoyancy would be used! Hope this helps!
What you are talking about is called buoyancy. if you want to know more about this go to the related link (What causes buoyancy?) below
If you float well the buoyancy is positive (your mass is less than the mass of the displaced liquid (water?), if you just manage to float or at least don't sink at any great speed, the buoyancy is neutral (your mass equals the mass of the liquid displaced).
every fish and bird has a streamlined body so that they can cut through the force of water and air respectively. if fish don't have streamlined body they will not be able to move through the water.buoyancy means when a body replaces the weight of water and u get an upthrust that means the water pushes u up so that u don't sink.that's why fishes need buoyancy so that they can float/swim. i hope this helped u.i don't know the proper definition of buoyancy but the meaning i gave u is right.
Positive Buoyancy. When submarine submerges, it initially uses negative buoyancy to submerge, and then levels out to neutral buoyancy.
Three types of buoyancy are positive buoyancy, negative buoyancy, and neutral buoyancy. Positive buoyancy occurs when an object is lighter than the fluid it displaces, causing it to float. Negative buoyancy happens when an object is heavier than the fluid it displaces, causing it to sink. Neutral buoyancy is when an object has the same density as the fluid it displaces, resulting in it neither sinking nor floating.