A cube of each of length 3m is subjected to a normal force of 36N. the stress on a cube is:
a. 12Nm-2
b. 4Nm-2
c. 2Nm-2
d. 8Nm-2
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Answer:
4 N m⁻²
Explanation:
We know that,
Stress = Force/Area
Given length of cube a = 3m
Force acts normal on one side of cube i.e., square
Area of square = a² = 3² = 9 m²
∴ Stress = Force/Area
= 36 N/9 m²
= 4 N m⁻²
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