Question

calculate the value of stress in a wire of steel having radius of 2 mm when 10 KN of force acts on it.​

Answer 1

stress is force/ area

here area = 3.14 xr^2

A= 3.14 x [2x10^-3]^2=0.12x 10^-6

f=10000

stress=10000/0.12x10^-6=83333333333.4

Answer 2

Answer:  7.96 ×10⁸ N/m²

Explanation:

Stress can be defined as the ratio of force and area. A deforming force when acts on a body, the body distorts. The internal resistance to this deforming force is the stress.

Stress = Force/Area

Force = 10 kN

Radius = 2 mm = 0.002 m

Area = π r² = 3.14×(0.002 m)² = 1.256 × 10⁻⁵ m²

Stress = 10000 N / 1.256 × 10⁻⁵ m² = 7.96 ×10⁸ N/m²