In
engineering and
physics, gc is a unit
conversion factor used to convert
mass to
force or vice versa.
[1] It is defined as
In unit systems where force is a derived unit, like in SI units, gc is equal to 1. In unit systems where force is a primary unit, like in imperial and US customary measurement systems, gc may or may not equal 1 depending on the units used, and value other than 1 may be required to obtain correct results. [2] For example, in the kinetic energy (KE) formula, if gc = 1 is used, then KE is expressed in foot-poundals; but if gc = 32.174 is used, then KE is expressed in foot-pounds.
According to Newton's second law, the force F is proportional to the product of mass m and acceleration a:
or
If F = 1 lbf, m = 1 lb, and a = 32.174 ft/s2, then
Leading to
gc is defined as the reciprocal of the constant K
or equivalently, as
International System | English System 1 | English System 2 |
---|---|---|
gc = 1 (kg·m)/(N·s2) | gc = 32.174 (lb·ft)/(lbf·s2) | gc = 1 (slug·ft)/(lbf·s2) |
In
engineering and
physics, gc is a unit
conversion factor used to convert
mass to
force or vice versa.
[1] It is defined as
In unit systems where force is a derived unit, like in SI units, gc is equal to 1. In unit systems where force is a primary unit, like in imperial and US customary measurement systems, gc may or may not equal 1 depending on the units used, and value other than 1 may be required to obtain correct results. [2] For example, in the kinetic energy (KE) formula, if gc = 1 is used, then KE is expressed in foot-poundals; but if gc = 32.174 is used, then KE is expressed in foot-pounds.
According to Newton's second law, the force F is proportional to the product of mass m and acceleration a:
or
If F = 1 lbf, m = 1 lb, and a = 32.174 ft/s2, then
Leading to
gc is defined as the reciprocal of the constant K
or equivalently, as
International System | English System 1 | English System 2 |
---|---|---|
gc = 1 (kg·m)/(N·s2) | gc = 32.174 (lb·ft)/(lbf·s2) | gc = 1 (slug·ft)/(lbf·s2) |