Prob. 9–16 •9-17. Determine the equivalent state of stress on an element at the same point which represents (a) the principal stress, and (b) the maximum in-plane shear stress and the associated average normal stress. Also, for each case, determine the corresponding orientation of the element with respect to the element shown. Sketch the results on each element. 75 MPa 125 MPa 50 MPa

Please help. Written on paper not typed on computer or keyboard please. Need help on both questions. Please include all units, steps to the problem and information such as its direction or if it is in compression or tension. Thx.

What is the v-velocity at the centerline after refining the mesh

Gentlemen, please help to solve a,b,c as I faced confusing questions about screw jack. Conditions are: screw jack is lifting 3.2 tonnes, screw pitch is 12 mm, diameter of the screw is 5 mm. Coefficient of friction was not given but I think we will need it for total force calculation, lets take it 0.2. a) Calculate horizontal component to move the load - what is ment here by horizontal component? b) Calculate vertical component to move the load - what is ment here by vertical component? c) Total force needed to move the load with a lever of 0.82m d) Velocity ratio (VR=distance by effort/distance by load)       Distance by effort (lever)=2 x 3.14 x 0.82 = 5.15m       Distance by load = pitch= 12mm= 0.012 m        VR=5.15/0.012= approx 429. e) Calculate efficiency. For this we need to have MA       (mechanical advantage). It can be calculated when we know total force.          Efficiency=Load (3200 x 9.8) / effort