Required information

Problem $04\mathrm{.}115-$ Stresses in a clamp tightened on wooden planks $-$ DEPENDENT MULTI$-$PART PROBLEM $-$ ASSIGN ALL THE PARTS

Assume that the clamp shown has been tightened on wooden planks being glued together until $P=440N.$

NOTE: This is a multi$-$part question. Once an answer is submitted, you will be unable to return to this part.

Problem $04\mathrm{.}115.$b $-$ Stress at a point on a clamp tightened on wooden planks

Determine the stress at point $D$ in section a$-$a$.$

The stress at point $D$ is $-$ MPa $.$