Conditions for Flotation in terms of density
Conditions for Flotation in terms of density
CONDITIONS FOR FLOATATION IN TERM OF DENSITY: Factors Affecting Buoyant Force or Floatation :
The magnitude of buoyant force or floatation depends on the following factors:
(i) Density of the Fluid: The liquid having higher density exerts more upward buoyant force on an object than another liquid of lower density. This is the reason, why it is easier to swim in sea water in comparison to normal water. Because sea water has higher density and hence exerts a greater buoyant force on the swimmer than the fresh water having lower density.
(ii) Volume of Object Immersed in the Liquid: As the volume of solid object immersed inside the liquid increases, the upward buoyant force also increases.
The magnitude of buoyant force acting on a solid object does not depend on the nature of the solid object. It depends only on its volume. e.g. When two balls made of different metals having different weights but equal volume when fully immersed in a liquid, they will experience an equal upward buoyant force as both the balls displace equal weight of the liquid due to their equal volumes.
For bodies with no air space: An ice cube, wooden block, a rod, a nail, etc., are bodies that have no vacant space or air space,i.e. there is no air trapped in them. The condition for the floatation of such bodies and the liquid concerned.
Suppose the volume of abody is V and its density is . Suppose it is immerged in a liquid of density
.
The mass of the body is M =
The weight of the body is W = Mg = Vg
The volume of the displaced liquid = V
The weight of this displaced liquid = Vg
Thus, the force of buoyancy B = Vg
The body will come up and float if
B > W
Vg = V
g
Thus, a body that has no air space will float only if its density is less than that of the liquid.
For bodies with air space: A small needle made of stainless steel sinks in water, but a larger bowl made up of stainless steel floats. This is beacause a bowl can displace a much greater volume of water than the volume of steel used to make it. A covered bowl which can hold one litre of milk, can displace slightly more than 1 litre of water when completely immerged in the water.So we should be more careful while using the equation.
As the volume of solid object immersed inside the liquid increases, the upward buoyant force also __________________. | |||
| Right Option : A | |||
| View Explanation | |||
The liquid having _______________ density exerts more upward buoyant force on an object than another liquid of lower density. | |||
| Right Option : B | |||
| View Explanation | |||
The liquid having higher density exerts __________________ upward buoyant force on an object than another liquid of lower density. | |||
| Right Option : B | |||
| View Explanation | |||
Students / Parents Reviews [20]
About Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thAbhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
Aman Kumar Shrivastava
10thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thUsually we see institutes offering objective based learning which usually causes a lag behind in subjective examinations which is the pattern followed by schools. I think it is really a work of planning to make us students grab the advantages of modes of examination, Objective Subjective and Onli...
Anika Saxena
8thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thMy experience with Abhyas academy is very nice or it can be said wonderful. I have been studying here from seven class. I have been completing my journey of three years. I am tinking that I should join Abhyas Academy in tenth class as I am seeing much improvement in Maths and English
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Aman Kumar Shrivastava
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Eshan Arora
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Om Umang
10thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thAbhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
Shreya Shrivastava
8thWe started with lot of hope that Abhyas will help in better understnding of complex topics of highers classes. we are not disappointed with the progress our child has made after attending Abhyas. Though need to mention that we expected a lot more. On a scale of 1-10, we would give may be 7.
Manya
8thIn terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
Aman Kumar Shrivastava
10thAbhyas is good institution and a innovative institute also. It is a good platform of beginners.Due to Abhyas,he has got knoweledge about reasoning and confidence.My son has improved his vocabulary because of Abhyas.Teacher have very friendly atmosphere also.
Manish Kumar
10thAbhyas academy is great place to learn. I have learnt a lot here they have finished my fear of not answering.It has created a habit of self studying in me.The teachers here are very supportive and helpful. Earlier my maths and science was good but now it has been much better than before.
Barkha Arora
10thWhen I have not joined Abhyas Academy, my skills of solving maths problems were not clear. But, after joining it, my skills have been developed and my concepts of science and SST are very well. I also came to know about other subjects such as vedic maths and reasoning.
Sharandeep Singh
7thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
