The section modulus of a rectangular light beam 25 metres long is 12.500 cm3
. The beam is simply
supported at its ends and carries a longitudinal axial tensile load of 10 tonnes in addition to a
point load of 4 tonnes at the centre. The maximum stress in the bottom most fibre at the mid span
section, is
(A) 13.33 kg/cm2
tensile
(B) 13.33 kg/cm2
compressive
(C) 26.67 kg/cm2
tensile
(D) 26.67 kg/cm2
compressive
. The beam is simply
supported at its ends and carries a longitudinal axial tensile load of 10 tonnes in addition to a
point load of 4 tonnes at the centre. The maximum stress in the bottom most fibre at the mid span
section, is
(A) 13.33 kg/cm2
tensile
(B) 13.33 kg/cm2
compressive
(C) 26.67 kg/cm2
tensile
(D) 26.67 kg/cm2
compressive