Advertisements
Advertisements
Question
Why is the bottom part of the foundation of a building made wider?
Advertisements
Solution
P ∝ 1/A i.e. pressure is inversely proportional to surface Area
Greater the area, lesser is the pressure.
In order that building should exert less pressure, the foundation of the building should have more area or be wider. So that building should not sink into the earth.
APPEARS IN
RELATED QUESTIONS
1 kgf = .............. (nearly).
Consider the situation of the previous problem. Let the water push the left wall by a force F1 and the right wall by a force F2.
Consider the statement given below and choose the correct option.
Assertion: Broad straps are used in bags.
Reason: Broad straps last for long.
In petrol bunks, in what unit is tire pressure measured?
All flowing substances, both liquids, and gases are called ______.
Hot air is ______ dense than ordinary air.
What happens when pressure is increased in solids?
Assertion (A): A sleeping mattress is so designed that when you lie on it, a large area of your body comes in its contact.
Reason (R): This reduces the pressure on the body and sleeping becomes comfortable.
Assertion (A): Wide wooden sleepers are kept below railway lines to reduce pressure on the railway tracks and prevent them from sinking into the ground.
Reason (R): Pressure is directly proportional to the area in which it is acting.
The force exerted by liquid perpendicular to the surface of the body is equal to the product of ______ at that point.
