Question

the mass of air in a classroom is 500kg the density of air is 1,2kg/m3 calculate the volume​

Answer 1

Answer:

Here, mass m=100kg,  

density ρ=500kgm  

−3

 

Volume of the body, V=  

ρ

m

​  

 

                                     =  

500

100

​  

=0.2m  

3

 

Weight of water displaced  

=Vρg

=0.2×10  

3

×g

=200gkgwt

Mass of water displaced =200kg

∴ the additional mass which can be added to body, so that body can sink  

=200−100=100kg