Memory Foam Matress

Glaive:

Softness doesn’t depend on density in a simple way. Softness depends on how much weight the foam can withstand. The more weight it can withstand, the more firm. However, density (D) is defined as the mass (M) of an object in grams divided by the volume (V) in cubic centimeters, so the equation looks like this: D=M/V. Find out the volume, which is length X width X height, and the mattress store can tell you it’s mass. They’ll probably already know the density of the mattresses. Basically, the more mass it has, the more dense. If you compare mattresses that are the same volume, the one that that has less mass is less dense. Weight is usually used as a synonym for mass. You can go to: http://www.bedinabox.com/density_and_softness.php for more info.