last doubts before jee!!!!! reply sirs

a hollow cone of height h and density p floats in water of density p' with its vertex inside water.The height of cone that lies in water

1 Answers

weight of water displaced will be the wieght of the cone

1/3Ï€r²hÏg=1/3Ï€r'²h'Ï'g

r²hÏ=r'²h'Ï'

now also see that

r=h tan Î±
and
r'=h' tan Î±

h³Ï=h'³Ï'

so h' = h(Ï/Ï')^1/3

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