Question

Law of floatation states
A. Weight of a floatation body is equal to the weight of the liquid displaced
B. The center of gravity of the floating body and center of buoyancy are in different lines.
C. Both
D. None

Answer 1

Recall the concept of law of floatation of the body on a liquid. This law gives the condition for a body to float on the surface of the liquid. Check which of the options given match the condition for a body to float on the surface of the liquid and conclude which of the given options is correct.

Complete step by step answer:
The law of floatation of a body given by Archimedes’ states the conditions for floatation of the body and sinking of the body.
For any body to float on the liquid, the center of gravity of the floating body must be in the same line as the center of the buoyancy and not in the different lines.
Hence, option B is incorrect.
Hence, the options C and D are also incorrect.
The body partially immersed in the liquid floats on the liquid if the weight of the floating body immersed in the liquid is equal to weight of the displaced liquid.

So, the correct answer is “Option A”.

Additional Information:
If the weight of the body immersed in the liquid is greater than the weight of the liquid displaced then the body will sink in the liquid instead of floating on it.

Note:
The students should keep in mind that the weight of the liquid displaced should be equal to the weight of the body which is immersed in the liquid and not the total weight of the floating body. The weight of the body which is not immersed in the liquid should not be considered in weight of the body.