A-LevelPhysicsForces, density and pressure9702/12 · May/June 2018 · Q121 Mark
A cylindrical block of wood has cross-sectional area A and weight W. It is totally immersed in water with its axis vertical. The block experiences pressures pt and pb at its top and bottom surfaces respectively. Which expression is equal to the upthrust on the block?
A(pb - pt)
B(pb - pt)A
C(pb - pt)A – W
D(pb - pt)A + W
✓ Correct answer
B: (pb - pt)A
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Forces, density and pressure and see which topics are most likely to come up next.
Sign up free →