![A carpenter glues a pair of cylindrical wooden logs by bonding their end faces at an angle of q = 30° as shown in the figure](https://www.gkseries.com/blog/wp-content/uploads/2023/10/A-carpenter-glues-a-pair-of-cylindrical-wooden-logs-by-bonding-their-end-faces-at-an-angle-of-q-30°-as-shown-in-the-figure.jpg)
Q. A carpenter glues a pair of cylindrical wooden logs by bonding their end faces at an angle of q = 30° as shown in the figure.
![](https://www.gkseries.com/blog/wp-content/uploads/2023/10/image-44.png)
The glue used at the interface fails if
Criterion 1: the maximum normal stress exceeds 2.5 MPa. Criterion 2: the maximum shear stress exceeds 1.5 MPa.
Assume that the interface fails before the logs fail. When a uniform tensile stress of 4 MPa is applied, the interface
A. fails only because of criterion 1
B. fails only because of criterion 2
C. fails because of both criteria 1 and 2
D. does not fail
Ans: fails because of both criteria 1 and 2