Question

A beaker containing water is placed on the platform of a spring balance. The balance reads $1.5kg$. A stone of mass $0.5kg$ and density ${10}^{4}kg/m^3$ is immersed in water without touching the walls of the beaker. What will be the balance reading now?

• A. $2kg$
• B. $2.5kg$
• C. $1kg$
• D. $3kg$

Answer 1

Answer: (A)

$2kg$

Force of buoyency acts to balance the weight in it. So, here, buoyent force will balance the weight corresponding to $2$ kg weight. So the same reaction force will be applied to the bottom of beaker by water.