Gravity, acceleration standard value

The quantity g is called the acceleration due to gravity and is equal to m2G/r2. At sea level and 45° latitude on the Earth (i.e., the condition for standard gravity, gstd) the value of g is 32.174ft/s2 or 9.806m/s2. The value of g is obviously different on the moon (different r and m2) and varies slightly over the surface of the earth as well (since the radius of the earth varies with both elevation and latitude). 

If the local acceleration of gravity is taken as die standard value of 32.174(ft)(s) 2, the potential-energy term becomes... 

Conversion factors for mercury manometer pressure units are calculated using die standard value for the acceleration of gravity and die density of mercury at die stated temperature. Additional digits are not justified because the definitions of the units do not take into account die compressibility of mercury or the change in density caused by the revised practical temperature scale, ITS-90. Similar comments also apply to water manometer pressure units. Conversion factors for conventional mercury and water manometer pressure units are based on ISO 31-3. 

Here g is the local acceleration of gravity on an element of mass the standard value is 9,80665 m/s The position of the indicator at several known pressures is recorded, and the -scale of the pressure gauge is completed by interpolation. 

Specific Impulse Equivalent exhaust velocity divided by the standard value of acceleration due to gravity expressed in seconds. 

Ibf) force to accelerate l(lbm) by 32.1740 (ft) s" atm = standard atmospheric pressure = 101 325 Pa (psia) E pounds force per square inch absolute pressure torr = pressure exerted by 1 mm mercury at 273.15 K (0°C) and standard gravity (cal) = thermochemical calorie (Btu) s international steam table British thermal unit (lb mole) s mass in pounds mass with numerical value equal to the molar mass (R) - absolute temperature in Rankines... 

The following table is based upon an ocean model which takes into account the equation of state of standard seawater and the dependence on latitude of the acceleration of gravity. The tabulated pressure value is the excess pressure over the ambient atmospheric pressure at the surface. 

ACCELERATION DUE TO GRAVITY - The rate of increase in velocity of a body falling freely in a vacuum. Its value varies with latitude and elevation. The International Standard is 32.174 ft. per second per second. 

Acceleration due to gravity n. The acceleration of a body freely falling in a vacuum. The International Committee on Weights and Measures has adopted as a standard or accepted value, 980.665 cm/s or 32.174ft/s. Hartland S (ed) (2004) Surface and interfacial tension. CRC Press, Boca Raton, FL. 

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