1 Steel shingle metal roof: Installation can cost at least $600 per square foot for the shingles. 2  Or run $750 per square foot for a standing seam steel roof. 3  Aluminum metal roof: Can cost anywhere between $700 and $1,200 per square foot.
Mass is the amount matter in an object. Mass is usually expressed in grams/pounds. For example, if you had a mass of 100 pounds and you went to the moon, you would still have â¦ a mass of 100 pounds, because there is 100 pounds of matter in you. However, your weight, or the gravitational pull on you, would change.
Mass is a measure of the amount of matter an object contains. - 1  The amount of mass in an object does not change. - 2  Gravitational force can change (i.e. the moon), which can cause weight to change. - 3  This is the reason scientists prefer to measure matter by its mass rather than its weight.