(II) A crane lifts the 13,000-kg steel hull of a sunken ship out of the water. Determine (a) the tension in the crane's cable when the hull is fully submerged in the water, and (b) the tensior when the hull is completely out of the water.
We have to determine the tension developed in the crane cable when it is pulling the hull
of a sunken ship, in and out of water.
Step 1 of 5</p>
Densityof the body is defined as the ratio of the mass of the body to its
Buoyancy force acting on the body having its volume immersed inside the liquid of density is given as,
Step 2 of 5</p>
Density of the water
Acceleration due to gravity
Mass of the steel hull in the air
Density of the steel hull
Volume of the steel hull …[From (1)]
Thus, the total volume of the steel hull is .
Step 3 of 5</p>
Figures below shows the free body diagram of the steel hull in and out of water respectively.
Buoyant force acting on the steel hull, when it is completely immersed in water using the relation(2) is,