A force of magnitude F acts on a plane surface of area A and makes an angle θ with the normal to the surface. Which option correctly gives the normal stress and tangential stress produced on the surface?
Options

Question

A force of magnitude F acts on a plane surface of area A and makes an angle θ with the normal to the surface. Which option correctly gives the normal stress and tangential stress produced on the surface?

Options

G1 Physics · Accepted Answer

Resolve the applied force into components normal and tangential to the surface. Normal component: F(normal) = F cosθ. Tangential component: F(tangential) = F sinθ. Normal stress is σ(normal) = F(normal) / A = [F cosθ] / A. Tangential or shear stress is τ = F(tangential) / A = [F sinθ] / A. Therefore the correct pair is [F cosθ] / A , [F sinθ] / A. Correct option: A.