Determine the force necessary to punch a 10 mm dia. Hole in a 20 mm thick mild steel plate, if the shearing strength of mild steel is 10 N/ mm2. Also, state the nature and magnitude of the stress in the punch

this question is not for a grade. it is only a study question. submitting it is not a violation of the honor code

The following question does not violate the honor policy as it is an after class practice problem not to be used on homework or any sort of test.          I am looking for help with this problem solving for all 4 parts. I have some confusion regarding the angles these forces are acting in.

Reproduce Figure 2.23 twice, first adjusting it so that it accurately depicts the case in which the horizontal stress is half that of the vertical stress, and second so that the horizontal stress is twice that of the vertical stress. Use arrow length to indicate relative stress magnitude.