46) The units of moment of inertia of mass are

47) The possible loading in various members of framed structures are

48) A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve

49) A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span

50) From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the center of circular plate