Three forces are applied to a short steel post as shown. Determine the principle stresses, principal planes (rotation angle), and maximum shearing stress at: a. Point H 50 kN 130 mm 75 kN 100 mm D30 kN 25 mm 200 mm 70 mm 140 mm 20 mm

An engine, weighing 3000 n, is supported on a pedestal mount. it has been observed that the engine induces vibration into the surrounding area through its pedestal at the maximum operating speed. determine the stiffness of the dynamic vibration absorber spring in (n/m) that will reduce the vibration when mounted on the pedestal. the magnitude of the exciting force is 250 n, and the amplitude of motion of the auxiliary mass is to be limited to 2 mm note: in this question type-in right numbers, no decimals, no fractions, no unit. approximate to right number if needed