1.

Two solids spheres of diameter d_(1) and d_(2) having material densities rho_(1) and rho_(2) are placed in contact with each other on the horizontal plane. The height of the combined center of mass from plane

Answer»

`h=((d_(1)^(2)rho_(1)+d_(2)^(2)rho_(2))/(d_(1)rho_(1)+d_(2)rho_(2)))`
`h=(d_(1)^(4)rho_(1)+d_(2)^(4)rho_(2))/(2(d_(1)^(3)rho_(1)+d_(2)^(3)rho_(2)))`
`h=((d_(1)rho_(1)+d_(2)rho_(2))/(rho_(1)+rho_(2)))`
`h=((d_(1)^(2)rho_(1)+d_(2)^(2)rho_(2))/(d_(1)^(3)rho_(1)+d_(2)^(3)rho_(2)))`

Answer :B


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