Total # Posts: 7
A Piece of material 15 cm long by 2.5 cm square is in compression under a load 100 KN. If the modulus of elasticity of the material s 105 GPa and Poisson¡¯s ratio is 0.25, find the alteration in length if all lateral strain is prevented by the application of uniform...
March 3, 2015
oin AC and DE. Triangles AFE and DFC are similar. so AF/FC = AE/CD = AE/EB also AE + EB = AB ie AE +234AE =AB so AE/AB =1/235 so AF/FC = 1/235 FC = 235 AF now, AC = AF +FC = 236AF ie AC/AF = 236/1 ie AC : AF = 236 : 1
February 28, 2013
There exists only one solution and the whole challenge is in proving the fact that there does not exist any other solution. So here we go... Let's add both these expressions. Then as per the problem, 7(a^2+b^2)=c^2+d^2 Clearly LHS is a multiple of 7 and so RHS must be a ...
February 26, 2013