Q: A uniformly tapering vessel is filled with a liquid of density 900 kg/m3 . The force that acts on the base of the vessel due to liquid is (g = 10 ms-2)
(a) 3.6 N
(b) 7.2 N
(c) 9.0 N
(d) 14.4 N
Click to See Answer :
Ans: (b)
Sol: F = P × A
F = ρ g h × A
F = 900 × 10 × 0.4 × 2 × 10-3
F = 7.2 N