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Basic questions for Mechanics lab (1)

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1) What is the difference between the Area Moment of Inertia, and mass Moment of Inertia –
when is each used?
2) What is Axail Stress?
3) What is Transverse stress?
4) What is Hoop stress and what is its direction?
5) What is Shear stress in bending?
6) What is Shear stress in torsion
7) What is a simply supported beam? What are its boundary conditions?
8) What is fixed supported beam and what are its boundary conditions?
9) What are Principal stresses and what are they used for?
10) What are Von Mises stresses and what are they used for?
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