Based on Einstein’s field equations, mass curves space time and curvature of space-time dictates the gravitational field around the mass. In the theory of general relativity, the equivalence principle is the equivalence of gravitational and inertial mass, and Albert Einstein's observation that the gravitational "force" as experienced locally while standing on a massive body (such as the Earth) is the same as the force experienced by an observer in an accelerated frame of reference. Since acceleration consume energy, it’s a worthy question to ask how curvature of space time can supply this equivalent required energy for acceleration. Let’s imagine that two similar small objects (e.g. mass A and mass B) are standing still in space-time relative to each other in their frame of reference. Now imagine that mass A absorbs an energetic pulse of gamma ray burst and starts to increase its mass (for example by absorbing radiation and increasing its thermal energy) .Its new effective mass will be signed as A’ where A’>>A. Based on the interpretation today of the Einstein’s field equations the curvature of space time causes mass B to move towards mass A’ since it is the shortest geodesic path in the curved space-time. The curvature of space time is practically the potential energy. But from mass B point of view (in its frame of reference where both mass A and B were standing still before the increase of mass A), it feels suddenly a force towards mass A’ and an increase in its kinetic energy and it is a worthy question to ask where does this extra kinetic energy come from? How can curvature in space-time explain this extra kinetic energy of mass B? This article tries to analyze the Einstein field equations in a new heuristic approach and to explain the cause for the movement of mass B towards the increasing mass A’ due to what is related as gravitational force. The article also suggests that the source of the extra kinetic energy given to mass B comes from the CMBR (Cosmic Micro wave Background Radiation).