Two Triangular wedges are glued together as shown in the

Two Triangular wedges are glued together as shown in the following figure. The stress acting normal to the interface, σ_n is __ MPa.

Normal stress, σ_n

σ_n =	σ_x + σ_y	+	σ_x - σ_y	cos2θ
	2		2

=	100 - 100	+	100 - (-100)	cos(2 × 45)
	2		2

= 0 +	200	× 0 = 0
	2