Question

A solid weighs 20gf in air amd 18gf in water find the specific gravity of the solid

Answer 1

Explanation:

S.G =density of mass in air/density of mass in water

20/18=1.11

Answer 2

Answer:

Specific gravity of solid is 10

Explanation:

In air

F (air)=mg =20gf

In water

F (water) = F(air) - buoyancy force

18gf =20gf - F

F =2gf = mg = volume *density of water*g

F(air) =volume *density of solid*g = 20gf

F(air)/F = (V *density of solid *g)/(V*density of water*g)= density of solid/density of water

20/2=10

But Specific gravity = density of solid/density of water

= 10