Relativity theory assumes that the effect of accelaration on an object equals the effect of this force
... acceleration of the system of reference, just as the usual 
theory of relativity ... To make all these effects equal those we would measure on 
a planet... [DOC] [TLE] Newton's Second Law - The Physics Classroom [PAR] ... Circular, Satellite, and Rotational Motion  Einstein's Theory of Special 
Relativity ....