A bathtub has a circular drainage plug at its bottom of area 15 cm215\text{ cm}^215 cm2. The bathtub contains water to a depth of 0.35 m 0.35\text{ m}\,0.35 m.
The density of the water is 1000 kg m−31000\text{ kg m}^{-3}1000 kg m−3 and the acceleration of free fall ggg is 9.81 m s−29.81\text{ m s}^{-2}9.81 m s−2.
What is the force acting on the plug due to the water?
188 exam-style questions on CIE IGCSE Physics Pressure, covering Pressure. Each one has a worked solution and a mark scheme showing where the marks go.