Un eslabón AB, cuyo ancho es b = 50 mm y su grosor t = 6 mm, se emplea para soportar el extremo de una viga horizontal. Si se sabe que el esfuerzo normal promedio en el eslabón es de -140 MPa y que el esfuerzo cortante promedio en cada uno de los pasadores es de 80 MPa, determine: a) El diámetro (d) de los pasadores. B) El esfuerzo promedio de apoyo en el eslabón.

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false