Define thrust and pressure and state the SI unit of each.
Fluids
Original Khojo Papers practice question — not from a past board paper.
When a body is wholly or partially immersed in a fluid it experiences an upthrust equal to the weight of the fluid displaced by it.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
The upthrust acts vertically upwards through the centre of gravity of the displaced fluid.
From the same topic and chapter, at a similar level.
Define thrust and pressure and state the SI unit of each.
Fluids
The relative density of a substance is 2.5. What is its density in kg m−3, and will it float on water?
Fluids
A body of volume 200 cm3 is fully immersed in water. Calculate the upthrust on it. Take the density of water as 1 g cm−3 and g = 10 m s−2.
Fluids
A force of 200 N acts normally on a surface of area 0.5 m2. Calculate the pressure.
Fluids
State Archimedes' principle and the law of flotation.
Fluids
Why is it easier to swim in sea water than in river water?
Fluids