Consider the following statements :

1. In a member subjected to uniaxial tensile force the maximum normal stress is the external

    load divided by the maximum cross-sectional area 

2. When the structural member is subjected to uniaxial loading, the shear stress is zero on a

    plane where the normal stress is maximum 

3. In a member subjected to uniaxial loading, the normal stress on the planes of maximum

    shear stress is less than the maximum 

In the plane truss shown below, how many members have zero force? 

According to maximum shear stress failure criterion, yielding in material occurs

when 

When a rectangular bar is subjected to a tensile stress, then the volumetri strain is equa to 

(where  = Linear strain for the bar, and

1/m = Poisson's ratio for the bar material.)