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Q9. A watertight door is 1.2 m high and 0.75 m wide, with a 0.6 m still. The bulkhead is flooded with sea water to a depth of 3 m on one side and 1.5 m on the other side.

(a) Draw the load diagram of the door.  (8)
(b) From the load diagram drawn in Q9(a), determine EACH of the following;
(i) the resultant load;  (3)
(ii) the position of the centre of pressure on the door.  (5)