A cylindrical metal specimen having an original diameter of 11.53 mm and gauge length of 51.4 mm is pulled in tension until frac
ture occurs. The diameter at the point of fracture is 7.80 mm, and the fractured gauge length is 68.3 mm. Calculate the ductility in terms of (a) percent reduction in area (percent RA), and (b) percent elongation (percent EL).
Yes it is true a pin support can not resist the rotation motion . It can resist only lateral or we can say that only linear motion of structure and can not resit angular moment of motion about hinge or pin joint.On the other hand a fixed support can resist linear as well rotation motion of structure.