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If a boy has a body weight of 500 N what upthrust does he need to float?
Same as his weight
How does a hot-air balloon rise?
The upthrust on the balloon is greater than the weight of the balloon. Thus, it rises upwards. The upthrust on the balloon is greater than the weight of the balloon because the air inside it has a lower density than the surrounding air.
What is bouyancy force always equal to?
Buoyancy force or upthrust must be equal to the weight of the object for the object to stay afloat. If the weight is greater than the upthrust, the object would sink.
Can upthrust be greater than weight?
YES...and examples are flying objects! Interestingly,Any liquid or gas produces upthrust. For example, the upthrust of air keeps a hot air balloon up.
What is apparent weight?
Apparent weight of an object is the weight of an object when the object is partially or totally immersed in a fluid{liquid/gas} normally apparent weight of an object is less than the real weight of an object due to an upward force {upthrust} which is produced by the pressure difference inside the fluids.
What are the reason why some things float in the water?
Certain things float in water because their density is less than the density of water. If something experiences more upthrust in water than its weight(upthrust>weight) or upthrust=weight, then it floats in water.
Why hot air balloons rises up in the sky?
Hot air has density less than the air surrounding the balloon. When the average density of the balloon filled with hot air is less than the density of the air outside upthrust is more than the weight of the balloon. therefore it keeps on rising up till the upthrust becomes equal to the weight of the balloon.
There are two reasons why tropical freshwater produces less upthrust than water in winter in the north atlantic but what are they?
In tropical seas the water is warmer so it is less dense than in colder areas. The ship sinks lower in water, as cargo is loaded, to displace a greater weight of water. Fresh water also produces less upthrust than sea water.
If a boy has a body weight of 500 N what upthrust does he need to float?
Same as his weight
How does density and upthrust compare in size?
Upthrust cancels weight out, weight is there but you do not feel it.
What is upthurst?
This is the name given to a bouyancey force. When an object diplaces a fluid, the amount of upthrust received is proportional to the volume of fluid displaced. When an object is floating then the upthrust is equal to the objects weight. When more people get on to a boat, the boat sinks further into the water, displacing more water so that the upthrust increases to balance the new weight. If an object sinks then the amount of upthrust it receives is less than the weight so the object falls. Just because it sinks doesn't mean that there is no upthrust, there is. This is why heavy objects appear lighter if you place them in water.
How does a hot-air balloon rise?
The upthrust on the balloon is greater than the weight of the balloon. Thus, it rises upwards. The upthrust on the balloon is greater than the weight of the balloon because the air inside it has a lower density than the surrounding air.
What is bouyancy force always equal to?
Buoyancy force or upthrust must be equal to the weight of the object for the object to stay afloat. If the weight is greater than the upthrust, the object would sink.
Why does empty box not imerse in water?
Because upthrust is greater than weight.
Can upthrust be greater than weight?
YES...and examples are flying objects! Interestingly,Any liquid or gas produces upthrust. For example, the upthrust of air keeps a hot air balloon up.
What happens to the body when the upthrust is less than the weight of the object'?
An object that is COMPLETELY submerged in water has its Upthrust equal its weight, but it doesn't necessarily float, an object could be at the rock-bottom of the ocean, and it would still have its upthrust equal to its weight. This is because the upthrust is equal to the weight of the fluid displaced, and so while the objects volume remains constant, and assuming the density of the fluid it displaces is constant.. The upthrust remains constant, this is unless the object compresses and has its density altered.. I know I didn't directly answer your question, but I hope this helps.. Even if a little.
If the upthrust is greater than the weight what happens to the submarine?
Well, if the Upthrust were greater than the weight, there would be a net force upwards, and as a consequence of newtons second law a=F/m it accelerates upwards. Hence, the submarine floats.
