Calculate the factor of safety for a ductile material with yield strength 350 MPa and principal stresses equal to 100 MPa and -150 MPa

‘ve these two question to do as homework, can someone do it for me ?

It is about theories of failure

Here are the questions

(1. Use the Maximum Shear Stress Theory (Tresca) and the Distortion Energy Theory (Von Mises) to calculate the factor of safety for a ductile material with yield strength 350 MPa and principal stresses equal to 100 MPa and -150 MPa

2. Use the Maximum Principal Stress Theory (Rankine) to calculate the factor of safety for a brittle material with yield strength 350 MPa and principal stresses equal to 100 MPa and -150 MPa )

for source here is the book name

Richard G. Budynas, J. Keith Nisbitt (2010), Shigley’s Mechanical Engineering Design, Mcgraw Hill 9^th edition, ISBN: 978-0-07-352928-8.

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