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Article: Mass, weight & density.(PHYSICAL AND RELATED PROPERTIES)
- Article from:
- Chemical Engineering
- Article date:
- October 1, 2005
- Author:
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Weight: The weight of an object is equivalent to its mass times the acceleration of gravity at a given point on the earth's surface. That gravitational acceleration (g) is 9.80289 m/[s.sup.2] at sea level. To adjust g for a given elevation above sea level, use the equation below:
g = (G) ([M.sub.E)/[R.sup.2], m/[s.sup.2], where: [M.sub.E] (earth's mass) = 5.98 x [10.sup.24] kg R = E + [R.sub.E] E = Elevation above sea level [R.sub.E] (earth's radius) = 6.38 x [10.sup.6] m G = 6.67259 x [10.sup.-11] (N.[m.sup.2)]/[kg.sup.2]
Density vs specific volume: These terms are the reciprocal of one another. Where density is equivalent to a substance's mass per unit ...