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The 25-lb slender rod has a length of 6 ft. Using a collar of negligible mass, its end A is confined to move along the smooth circular bar of radius . End B rests on the floor, for which the coefficient of kinetic friction is . If the bar is released from rest when , determine the angular acceleration of the bar at this instant.
Vertical rods (1), (2), and (3) are all strain free when they are initially pinned to a straight, rigid,horizontal beam BF. Subsequently, heating of the rods causes them to elongate and leaves the beam in the position denoted by . Point moves vertically downward by a distance in., and the inclination angle of the beam is in the counterclockwise sense, as indicated on Fig. P2.3-8. Determine the strains , and in the three rods.
To address the limitations of IP version 4, a major effort had to be undertaken via IETF that resulted in the design of IP version 6 and there are still is significant reluctance in the adoption of this new version. However, no such major effort is needed to address the limitations of TCP. Explain why this is the case.