Question

The engineers are designing a base for the pools in the ladder. The base is a square with edge lengths of 1.5 meters. A criterion for the base is that it must withstand a stress of 3,200 N/m². In tests, a prototype of the base withstood a total force of 4,500 N before it failed.

Answer 1

Stress = Force / Area

Stress required = 3,200 N/m^2

Area = side ^2 = 1.5^2 = 2.25 m^2

Force = 4,500 N

Replace with the values given:

S = 4,500/2.25 = 2000 N/m^2 ( less than 3,200)

Correct answer:

NO, because it was able only to withstand a stress of 2000 N/m^2