Question

A body of volume 2000 cm3 has a mass 4 kg. Find the density of the body. Will the body sink or float in water, if the density of water is 1 g/cm3.

Answer 1

`2 g/cm^3`, it will sink

Step-by-step explanation:

The density of an object is given by

`d=(m)/(V)`

where

m is the mass of the object

V is its volume

For the body in the problem, we have

m = 4 kg = 4000 g

`V=2000 cm^3`

Therefore, its density is

`d=(4000)/(2000)=2 g/cm^3`

And the object will sink in water, because its density is larger than that of water, which is
`1 g/cm^3`. (an object sinks when its density is larger than that of water, otherwise it floats).