Laws and Constants
According to the law of universal gravitation, the attractive force (F) between two bodies is proportional to the product of their masses (m1 and m2), and inversely proportional to the square of the distance, r, (inverse-square law) between them:
The constant of proportionality, G, is the gravitational constant.
The gravitational constant is a physical constant that is difficult to measure with high accuracy. In SI units, the 2010 CODATA-recommended value of the gravitational constant (with standard uncertainty in parentheses) is:
with relative standard uncertainty 1.2×10−4.
Read more about this topic: Gravitational Constant
Famous quotes containing the words laws and and/or laws:
“I would have these good people to recollect, that the laws of this country hold out to foreigners an offer of all that liberty of the press which Americans enjoy, and that, if this liberty be abridged, by whatever means it may be done, the laws and the constitution, and all together, is a mere cheat; a snare to catch the credulous and enthusiastic of every other nation; a downright imposition on the world.”
—William Cobbett (1762–1835)
“The Stage but echoes back the publick Voice.
The Drama’s Laws the Drama’s Patrons give,
For we that live to please, must please to live.”
—Samuel Johnson (1709–1784)