EASY
9th ICSE
IMPORTANT
Earn 100

State the principle of floatation.

Important Questions on Upthrust in Fluids, Archimedes' Principle and Floatation

EASY
9th ICSE
IMPORTANT
When a piece of wood is suspended from the hook of a spring balance, it reads 70 gf. The wood is now lowered into the water. What reading do you expect on the scale of spring balance?  
EASY
9th ICSE
IMPORTANT
How does the density ρs of a substance determine whether a solid piece of that substance will float or sink in a given liquid of density ρL?
EASY
9th ICSE
IMPORTANT
Explain why an iron nail floats on mercury, but it sinks in water.
MEDIUM
9th ICSE
IMPORTANT
A body floats in a liquid with a part of it submerged inside liquid. Is the weight of floating body greater than, equal to or less than upthrust?
EASY
9th ICSE
IMPORTANT
A homogeneous block floats on water partially immersed. State the position of the centre of buoyancy B with respect to the centre of gravity G of the block.
EASY
9th ICSE
IMPORTANT
A homogeneous block floats on water completely immersed. State the position of the centre of buoyancy B with respect to the centre of gravity G of the block.
MEDIUM
9th ICSE
IMPORTANT

The figure shows the same block of wood floating in three different liquids A, B and C of densities ρ1, ρ2 and ρ3 respectively. Which liquid has the highest density? Give a reason for your answer.

Question Image

MEDIUM
9th ICSE
IMPORTANT
Draw a diagram to show the forces acting on a body floating in water with its some part submerged. Name the forces and show their points of application. How is the weight of water displaced by the floating body related to the weight of the body itself?