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12.1 Stationary reference system


Stationary reference system, with X axis horizontal and positive to the right, and Y axis vertical an positive to upwards.

g:Value of the gravity (absolute value). To default write the gravity value to the selected system (9.81 m/s2 to SI, and 32.2 ft/s2 to English system).
t:Time of the problem, to be used in data of power and momentum. To default writes 1, to avoid a power undefined data.