2. An open top box-shaped barge has the following dimensions: Length 50 m Breadth 14 m Depth 10 m The barge floats at a draught of 2156 m in dock water RD 1.007 when light. a) the light displacement of the barge

(b) The draught when floating in the light condition in salt water RD 1.025.

(c) the minimum weight of evenly distributed cargo required to sink the bange by a further 0.44 m in salt water.

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.

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.