Question

If vertical stress at the centre of $4m\times 6m$ rectangular strip is 80 MPa. What will be the stress below the corner of rectangular strip of (area) $2m\times 3m$

• A. 40 MPa
• B. 20 MPa
• C. 160 MPa
• D. 320 MPa

Answer 1

The correct option is B 20 MPa



Rectangular area of $4m\times 6m$ can be divided into 4 strip of equal size of $2m\times 3m.$

Stress below the centre of strip $4m\times 6m$= 80 MPa

Stress below the corner of the strip $2m\times 3m$
$=\frac{80}{4}$ = 20 MPa