FLUID PROBLEM ABOUT SUBMERGED BLOCK

Submerged Block Problem A 15.0 kg cube of wood with a density of 750 kg/m3 is submerged in a large container of water. The cube of wood is prevented from floating to the surface by a cord attached to the bottom of the container.
(A) How much buoyant force does the water exert on the cube ? Does the buoyant force depend upon the depth of the water ?
(B) What is the tension in the cord holding the cube submerged ? Will the tension change if gasoline (680 kg/m3) were added on top of the water ?
(C) What would be the tension in the cord if the level of the water were reduced to a depth so that only 3/4 of the cube was submerged ?
(D) Suppose the cord is cut and the wood cube floats to surface of the water. If a gasoline (680 kg/m3) were added to the top of the water (covering the cube) would the cube float higher or lower in the water ? How many liters of the cube would be submerged beneath the water in this situation ?

A wood block is held submerged by a cord.
The density of the wood cube is less than that of water so that
the block would float if not attached to a cord.




THINK AND THINK !!!