Examples of Pressure
Examples of Pressure
Examples of Pressure:
1.It is difficult for us to walk on sand, because our feet sink into it. On the other hand a camel which is much heavier can easily walk on sand. This is because a camel has broad feet. The weight of the camel is spread over the large area covered by its feet. Thus, the pressure exerted by its body on the sand is less.
2.A school bag has wide strap made of thick cloth so that the weight of bag falls over a large area of the shoulder of the child. This produces less pressure on the shoulder and hence can carry heavy school bag more comfortable. If the school bag has thin straps, then the weight of school bag will fall over a small area of the shoulder. This will exert a large pressure and will become very painful for the child to carry the heavy school bag.
3.It is easier to walk on soft sand with-flat shoes rather thin shoe with sharp heels (or pencil heels). A flat shoe has a greater area in contact with the soft sand due to which there is less pressure on the soft ground that is why, flat shoes do not sink much in soft sand and it is walk on it. While, a sharp heel has a small area in contact with the soft sand and so exerts a greater pressure. So the sharp heels sink deep into soft sand and it is difficult for the wearer to walk on soft sand.
4. When a man walks on the ground the pressure on ground is more than when he is lifts his foot, the weight of man falls on a smaller area hence produce more pressure on the ground. On the other hand, when the man is standing, then both his feet are on the ground. Due to this the weight of the man falls on a larger area of the ground which exerts less pressure on the ground.
5. A woodpecker hammers at tree trunks with its beak which is sharp, pointed and longs. The force falls on the sail area at the tip of its beak. Hence, due to its large effect it can make a hole in the wood very fast.
6. It is easier to cut an apple from the sharper side than blunt because the sharer side has less area.
7. The tip of a sewing needle is made sharp, so as to put large pressure on a very small area of cloth. Similarly, a nail has a pointed tip, so that when it is hammered, the force of hammer falls on a very small area of wood or wall to create a large pressure which penetrates the nail into wood or wall easily.
8. The skies used by skiers are long and flat which reduce the pressure on the snow. This makes the skiers to slide over the snow easily and their feet do not sink in the ground.
9. The tyres of buses and trucks have broad and double wheels, so that the pressure on the tyres is reduced and they do not burst. The bigger the wheel, the less is the pressure on them, so that they can carry greater weight.
10. Porters wear turbans while carrying heavy loads on heads. By doing this pressure on their heads gets reduced due to the increase in area of contact.
11. An army tank weighing more than a thousand tonne rests upon a continuous chain. This chain is a wide steel belt provided over the wheels of the tank so that they exert less pressure on the ground and do not sink into it.
12. Wooden sleepers are kept below the railway lines so that there is less pressure of the train on the ground and railway lines may not sink into the ground.
13. The foundation of high rise buildings are kept very wide, so that the weight of the building produces less pressure on ground and the building may not sink into the ground.
Buildings are provided with broad foundations, so that the pressure exerted on the ground becomes _________________. | |||
| Right Option : B | |||
| View Explanation | |||
Which of the following are correct : (a) The tractors have tyres, to creates more pressure on the ground, so that tyres sink into comparatively soft ground in the field. (b) The handles of bags, suitcases, etc. are made broad, so that more pressure is exerted on the hand. (c) Buildings are provided with broad foundations, so that the pressure exerted on the ground becomes more. | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following are correct : (a) The tractors have tyres, to creates less pressure on the ground, so that tyres do not sink into comparatively soft ground in the field. (b) Pressure on ground is more when a man is walking than when he is standing because in case of walking, the effective area is less. | |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [20]
Usually 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
8thBeing 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
8thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
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
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
7thMy 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.
Shivam Rana
7thAbhyas 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
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
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
7thMy experience with Abhyas Academy has been very good. When I was not in Abhyas whenever teacher ask questions I could not speak it confidently but when I came in Abhyas, my speaking skills developed and now I am the first one to give the answer of teachers question.
Upmanyu Sharma
7thIn 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
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
10thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thIt 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
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
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
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
8thAbout 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...
