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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.
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∙ 13y ago
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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.
Will a submarine sink or float when its weight is greater than the upthrust acting on it?
When the weight of any object surrounded by fluid is greater than the buoyant force on it, it sinks. (The buoyant force is just the weight of the fluid that would be in that space if the submerged object were not there.)
What is the effect of water on object submerged in water?
It is named as buoyant force which always acts in the upward direction ie opposite to the weight of the body. So actual weight appears to be reduced. Hence apparent weight loss
If a boy has a body weight of 500 N what upthrust does he need to float?
Same as his weight
Why does empty box not imerse in water?
Because upthrust is greater than 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.
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.
Why does a air balloon not rise?
To lift the baloon, upthrust should be greater than weight. Mg
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.
Will a submarine sink or float when its weight is greater than the upthrust acting on it?
When the weight of any object surrounded by fluid is greater than the buoyant force on it, it sinks. (The buoyant force is just the weight of the fluid that would be in that space if the submerged object were not there.)
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.
What is the effect of water on object submerged in water?
It is named as buoyant force which always acts in the upward direction ie opposite to the weight of the body. So actual weight appears to be reduced. Hence apparent weight loss
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.
How does the upthrust effect an object?
The upthrust is the reaction force that water exerts on an object inside water. if the upthust of the water is less than the force exerted by the object, the object sinks in water, and if the upthrust is greater than or equal to the force exerted by the object, the object floats.
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.
