Asolid weighs 200n in air, 150n in water and 170n in a liquid. find relative density of solid, relative density of liquid and density of liquid in sl system.

Given:

Weight of solid in air,

Weight of solid in water,

Weight of solid in liquid,

Solution:

Calculation of:

1. Relative density of solid,

2. Relative density of liquid,

3. Density of liquid in S.I units:

Also, we know:

where

= density of liquid

= density of water

Now, from the above formula:

measuring things 1 litre of water

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west