Q: Water is filled up to a height h in a beaker of radius R as shown in the figure. The density of water is ρ , the surface tension of water is T and the atmosphere pressure is p0. Consider a vertical section ABCD of the water column through a diameter of the breaker. The force on water on one side of this section by water on the other side of this section has magnitude
(a) $\large 2 p_0 R h + \pi R^2 \rho g h – 2 R T$
(b) $\large 2 p_0 R h + R \rho g h^2 – 2 R T$
(c) $\large p_0 R^2 + R \rho g h^2 – 2 R T$
(d) $\large p_0 R^2 + R \rho g h^2 + 2 R T$
Ans: (b)
