# Thread: finding mass from density

1. ## finding mass from density

i know that density=mass/volume. so m=d*v. but i want to find the mass of something that has a density of 100kg per m^3. so is the mass just 100kg then? that seems too simple...

2. Originally Posted by isuckatcalc
i know that density=mass/volume. so m=d*v. but i want to find the mass of something that has a density of 100kg per m^3. so is the mass just 100kg then? that seems too simple...
You need to know the volume as well.

1 m^3 of the material, exactly, would be 100 kg. 5 m^3 would be 500 kg.

Kind of light. Is it balsa wood?

3. it's a snowflake

4. Originally Posted by isuckatcalc
it's a snowflake
Good lord, then, order me $\displaystyle 6 \times 10^5$ cubic meters. I want a snow day.

5. Originally Posted by isuckatcalc
i know that density=mass/volume. so m=d*v. but i want to find the mass of something that has a density of 100kg per m^3. so is the mass just 100kg then? that seems too simple...
If you have 1 cubic meter of the material,
then the mass will be 100 kg.

It's really that simple.

The problem is to find the volume of the snowflake.

.

6. Originally Posted by isuckatcalc
i know that density=mass/volume. so m=d*v. but i want to find the mass of something that has a density of 100kg per m^3. so is the mass just 100kg then? that seems too simple...
hi $\displaystyle 100$ $\displaystyle kg/m^3$,which is the density of something,means that in each 1 $\displaystyle m^3$ you'll find 100 kg of that thing.
So the mass will equal 100 Kg only when the volume is 1 $\displaystyle m^3$.