An Object Floats on the Surface of a Fluid

Multiple Choice

An object floats on the surface of a fluid.For purposes of calculating the torque on it, the buoyant force is taken to act at:

A) the center of the bottom surface of the object
B) the center of gravity of the object
C) the center of gravity of the fluid that the object replaced
D) the geometric center of the object
E) none of the above