Please consider the following scenario: Assume we have an object (o) at rest with a mass = m. Hence, we can calculate by general relativity the gravitational force (g) on this mass. Now, assume we remain stationary, at the origin, and a velocity (v) is imparted to the mass along the x-axis. The velocity (v) is substantially near the speed of light (c). This situation begs the question: Is the gravitational force (g) on the fast moving mass (m) now proportionally higher by a magnitude γ? Is speed linked to gravitational effects? Please provide credible citations which address this issue. Thanks.