Question

Anoop places a cuboid of dimensions $12cm\times 8cm\times 6cm$ with different faces touching the table. Which face, when touching the table, will experience the greatest pressure?

• A.
• B.
• C.
• D. All faces experience the same pressure

Answer 1

The correct option is C

$Pressure=\frac{Force}{Area}$.
When force acting is constant, pressure is inversely proportional to area. Here, the constant force is the weight which is $mg$. But, the area of each face is different.
Figure A has an area of $8\times 12=96c{m}^2$,
Figure B has $12\times 6=72c{m}^2$ and
Figure C has $8\times 6=48c{m}^2$.
Therefore, $FigureC$ will experience the greatest pressure.