Physics

Chemistry

# How do you find the mass of something using dimensions?

###### Wiki User

###### December 17, 2009 2:37AM

You must first know some other quantity such as density or a constant of volume for the substance

## Related Questions

###### Asked in Math and Arithmetic

### How can you find the weight of something using a mathematical formula?

It depends on what information you have.
You need to know the mass of something and the force of gravity
at the location where you want its weight.
If you do not know the mass, you need to know the density and
volume. Archimedes's method is not appropriate because that derives
the weight by experiment rather than mathematical formula.
If you do not have the volume, you need to know those dimensions
of the object that will allow you to calculate the volume.

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### Why the mass is dimensionless?

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### How do you find the mass of an object given its volume and dimensions?

You can't.
If I tell you that the volume is "One quart", you still have no
idea what the mass is.
In fact, there are millions of different things it can be.
If the quart volume is full of air, the mass is small.
If the quart volume is full of vacuum, its mass is even
smaller.
If the quart volume is full of milk, its mass is medium.
If the quart volume is full of rock, its mass is large.
By the way ... if you know the dimensions, you can calculate the
volume.
Volume and dimensions give the same information.