Question

A box has the dimensions of 50 cm x 30 cm x 15 cm, weighs 150 N, and is to be placed on a fragile surface. The surface can only withstand a pressure of 0.25 N/cm2
. Which faces of the box can be placed on the table?
How did you reach your conclusion?
How can you explain why this is the case?

Answer 1

Answer:

Dimensions 30 cm x 20 cm x 15 cm = 0.3 m x 0.2 m x 0.15 m

The resting surface has an area = 0.2 x 0.15 = 0.03m²

Weight of the cuboid = 30 x 10 = 300N

Pressure = Force(Weight) / Area

                = 300/0.03 = 10000 N/m²