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.
This is because mass is defined as the amount of material an object contains, and that doesn't change whether the object is on Earth, on the Moon, or anywhere in space. Now, weight and mass are linked in the following way: the weight is obtained by multiplying the mass by the value of the gravitational acceleration. That means that for an object of a given mass, the stronger the gravitational attraction, the larger its weight (this is why objects weigh 6 times more on Earth than on the Moon, and weigh nothing in empty space).