Weight
In science and engineering, the weight of an object is the force on the object due to gravity. Its magnitude (a scalar quantity), often denoted by an italic letter W, is the product of the mass m of the object and the magnitude of the local gravitational acceleration g; thus: W = mg. When considered a vector, weight is often denoted by a bold letter W. The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton. For example, an object with a mass of one kilogram has a weight of about 9.8 newtons on the surface of the Earth, about one-sixth as much on the Moon, and zero when in deep space far away from all bodies imparting gravitational influence.
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Famous quotes containing the word weight:
“I, being born a woman and distressed
By all the needs and notions of my kind,
Am urged by your propinquity to find
Your person fair, and feel a certain zest
To bear your body’s weight upon my breast:”
—Edna St. Vincent Millay (1892–1950)
“Tears at times have the weight of speech.”
—Ovid (Publius Ovidius Naso)
“When Socrates, after being relieved of his irons, felt the relish of the itching that their weight had caused in his legs, he rejoiced to consider the close alliance between pain and pleasure.”
—Michel de Montaigne (1533–1592)