Question

calculate the greatest and the least pressure exerted by a block of size 20cm × 10cm×8cm having mass of 5kg [take g = 10 m/s].​

Answer 1

Explanation:

pressure=force/area

pressure is inversely proportional to the area of cross-section.

so, maximum area corresponds to least pressure.

so, least pressure= (5x10) / (0.2 x 0.08)=3125 pa

and, greatest pressure= (5x10) / (0.08 x 0.05)= 12500 pa