# Selina Solutions Class 9 Physics Solutions for Exercise 5C in Chapter 5 - Chapter 5 Upthrust In Fluids Archimedes Principle And Floatation

Question 5 Exercise 5C

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?

The body will float if ρS ≤ ρL and it will sink if ρS > ρL

Video transcript
"hello everyone welcome to leader learning i am gurpreet your science tutor today's question is how does the density rho s of a substance determine whether a solid piece of that substance will float or sink in a given liquid of density rho l so here you have to tell what are the conditions for floating or sinking if the densities of a substance and liquid is given so for a substance to float for floating the density of substance of substance should be less or equal to the density of liquid that is according to the question rho s should be less than or equal to rho l okay now if we talk about floating sorry for sinking for sinking density of substance should be greater than the density of liquid so according to the question here the value of rho s should be greater than the value of rho l so these are the conditions for floating and sinking for more such videos please subscribe leader learning and for any doubts drop a comment thank you"
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