When a rectangular bar of length l, breadth b and thickness t is subjected to an axial pull of P, then linear strain (?) is given by (where E = Modulus of elasticity)
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Strength of Materials problems
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1. Two closely-coiled helical springs 'A' and 'B' of the same matenal, same number of turns and made from same wire are subjected to an axial load W. The mean diameter of spring 'A' is double the mean diameter of spring 'B'. The ratio of deflections in spring 'B' to spring 'A' will be
4. The bending moment diagram for a cantilever beam of length l and carrying a gradually varying load from zero at the free end and w per unit length at the fixed end is a parabolic curve.
5. A simply supported beam of length l is loaded with a uniformly distributed load of w per unit length. The maximum deflection is and lies at the centre of the beam.