Questions
A rod AB of uniform cross-sectional area is subjected to an axial tensile force F. If the maximum normal force induced in the rod is 8 KN/cm2, the maximum shear stress induced in the rod will be
detailed solution
Correct option is D
If S be the cross sectional area of the rod, Then σmax=FSNow area of cross section MN=S/sinθComponent of applied force along MN=Fcosθ∴ Shear stress on the section MN=τ=Fcosθs/sinθ=F2Ssin2θWhen θ=45o, τ=τmax=F2S=σ2=82KNcm2=4 KNcm2Talk to our academic expert!
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One face CD of a brass cube ABCD having length of side 10 cm is fixed and a tangential force is applied on the free face A. As a result the angular displacement of the other face is 0.18o. If shear modulus of brass is , the elastic potential energy stored in the cube is
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