Home › ICSE Class 8 › physics › Force and Pressure › Why is the foundation of a tall building made wi…
Why is the foundation of a tall building made wide?
AFor aesthetic look
BTo increase friction
CTo reduce pressure on the soil
DTo save material in general usage
Answer & Solution
Correct answer: A. For aesthetic look
1. The total weight of the building is fixed by its size.
2. A wider base spreads that weight over more area.
3. Pressure = weight / area, so wider base = less pressure.
4. So the soil does not give way under the building.
_Source: Selina Concise Physics ICSE Class 8, Ch 3 'Force and Pressure'_
Related questions
The instrument used to measure atmospheric pressure is the:Atmospheric pressure on the human body is roughly 100,000 Pa. Why don't we feel crushed?Friction acts:Action and reaction forces:Why are dams built thicker at the bottom than at the top?A camel can walk easily on desert sand because:Pressure at the bottom of a tall water column compared with a short column:Why is it easier to break a watermelon by pressing a needle than by pressing the palm?