Physics, asked by ak9468416145oyhmln, 1 year ago

give reasons A> building have wide foundation B>it is easier to hold a school bag with wide straps than the one with thin things C> a bottle gets crushed when all its air removed

Answers

Answered by Abhijittripathy991
2
You are currently studying 'pressure' chapter.

A- Buildings have wide foundation to decrease pressure at its bottom and on the land which the building stands. As you know pressure=force/area so when area increases pressure decreases.To decrease pressure at the bottom buildings have wider foundation.

B- It is same reason as of above.Area increases then pressure will decrease and it will be more comfortable for you to carry the bag.

C- This is a different concept and it is about atmospheric pressure.Bottle has air inside it which constantly applys pressure in the inner wall of the bottle.And this force due to pressure is balanced by the force due to atmosphere or atmospheric pressure outside the bottle.So when we suck all air out,the bottle gets crushed by the force due to atmospheric pressure outside the bottle.

Thanks.
Tripathy.
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