Physics-
General
Easy
Question
A cube of mass m and density D is suspended from the point P by a spring of stiffness k. The system is kept inside a beaker filled with a liquid of density d. The elongation in the spring, assuming D > d, is:
- None of these.
The correct answer is:
The cube is in equilibrium under the following three forces,
V = volume of the immersed portion of the cube. For complete immersion, V = volume of the cube.
For equilibrium of the cube,kx + Fb = mg
Þ x = 
Where V = (m/D)
Þ x =
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