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If the upthrust is greater than the weight what happens to the submarine?
Wiki User
∙ 12y ago
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.
Abraham_Otaku
Wiki User
∙ 12y agoit will float
Abraham_Otaku
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Which is heavier 1kg of stone or 1kg of feathers?
It's a trick question, but with a not-so-trick answer:The expected "correct" answer, is that since both "weigh" 1kg, they both have the same weight, and so neither one is heavier.The CORRECT answer actually depends on a few more details, which will be explained in steps as follows:1) The kg is a unit of mass, whilst weight, in the correct meaning of the word, is a measurement of forcemeasured in Newtons.2) Force = mass x acceleration-> Weight = mass x acceleration-due-to-gravity (g = 9.81 m/s2)So up until now, we could argue that the stones and the feathers each have a weight of approx. 9.81 Newtons. However, so far we've only calculated the downward force on the two objects due to gravity.Assuming that we're measuring the weight of these two objects somewhere on Earth, we must also consider the effects of the Earth's atmosphere, specifically the upward force this causes. Since air is a fluid, we must consider the effects of upthrust on these two objects:3) Upthrust = weight-of-displaced-fluidNow this is where things start to get interesting! Since we can safely assume that stone is more dense than feathers, then for the two objects to have the same mass of 1kg, the volume of the feathers must be greater than the volume the stone. Therefore, they will displace more of the fluid (air):4) Stone-upthrust < Feathers-upthrustSo, getting back to weight:5) Weight = downforce-due-to-gravity - upthrust-from-fluidSo, since the downforce due to gravity is equal in both instances, BUT the feathers produce more upthrust, the weight of the stone is, in fact, greater than the weight of the feathers.Therefore, if they are both measured at the same location on Earth, 1kg of stone will be heavier than 1kg of feathers.(Just don't tell your school Physics teacher this, unless you want him to think you're a smart-ass :-)
Which has a greater weight a kilogram of butter or a kilogram of lead which has greater density?
They both weight a kilogram. Lead has a higher density.
Is 8.3 kilograms greater than 8300 grams?
Neither is greater.
How much is a magnum of liquid equal to?
Mostly a poor question, since you never defined the units of "much." However, in terms of weight, the answer will depend on the specific gravity of the liquid; the greater the SG of the liquid, the greater the weight.
Which is greater 285g or 1.2kg?
In weight, 1.2kg is much heavier than 285g
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.)
Why does empty box not imerse in water?
Because upthrust is greater than weight.
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.
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.
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.
Why does a air balloon not rise?
To lift the baloon, upthrust should be greater than weight. Mg
How does density and upthrust compare in size?
Upthrust cancels weight out, weight is there but you do not feel it.
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
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.
If a boy has a body weight of 500 N what upthrust does he need to float?
Same as his weight
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.
What is the apparent weight for a body floating in water equal to?
if its floating, its zero : weight or force = upthrust from water note: upthrust from water = weight of water displaced
