A solid weighs 120 gf in air and 105 gf when it is completely immersed in water. Calculate the relative density of solid.
Given,
Weight of the solid in air (W1) = 120 gf
Weight of the solid when completely immersed in water (W2) = 105 gf
Relative density of solid=(W1W1−W2)=(120120−105)=8\text{Relative density of solid} = \big(\dfrac{\text W_{1}}{\text W_{1} − \text W_{2}}\big) \\[0.5em] = \big(\dfrac{120}{120 - 105}\big) \\[0.5em] = 8Relative density of solid=(W1−W2W1)=(120−105120)=8
∴ Relative density of solid = 8
