Problem 1 The steel pipe AB has 102-mm outer diameter and 6-mm wall thickness The arm CD is rigidly attached to the pipe, and the internal loads at the center of the section containing point K are V-10000 N. M, 2000 Nm, M, -1500 Nm. N, M.-2000 (A) Find the normal and shear stresses at K. (8) Determine the principal stresses (a), a) and the maximum shear stress (t) at K is allowed. 200 mm 51 mm 6 mm D 10 kN C 150 mm H K B