Q: How do you work out mass?

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Weight = mass x gravity

You can't. Work is (force) times (distance), so you have to know something about the force. Just knowing the mass doesn't tell you anything about the force ... unless there's actually something else about the mass that you've overlooked.

Because you have to do work on the pair ... add work to them ...in order to separate them.

Weight is mass times acceleration due to gravity.

You cannot. You do not have the necessary information.

Related questions

There are three mass that associated with a work of art. The three mass are visual form, aesthetics and content.

There are three mass that associated with a work of art. The three mass are visual form, aesthetics and content.

Knowing the volume of a substance and its density you can work out the mass of that volume. Alternatively you could measure the mas using a mass balance.

divide the mass by the volume: mass/volume=density

Density is mass divided by volume.

yes

yes it works

Work. The force times the distance over which the force is applied is equal to the work. Work is measured in joules.

density equals mass/volume, volume equals mass/density, and mass equals density times volume.

Well, Mass is one of the fundamentals of Science, since all objects that contain matter contain mass.

Here are two equations that might be useful.Newton's Second Law: force = mass x accelerationDefinition of work: work = force x distance

mass = volume x density mass = force / acceleration mass = work / (acceleration x distance)