So this is what I understand from General Theory of Relativity:
A body freely falling towards earth's surface would be in an inertial frame of reference (air removed) with zero net force acting on it. This would cause weightlessness and would be equivalent to a body in spacetime (under no acceleration) with no gravitational masses around it (and hence no gravity). Any physical experiment in these two frames would thus give equal results making them indistinguishable. But the question is, why is the freely falling body near Earth's surface in motion in inertial frame and not at rest. Why does a ball dropped of the cliff sets in motion and not stay there suspended ?
Does the geodesic formed due to spacetime curvature near earth set the ball in motion or is every body on earth having an initial velocity which is maintained once the free fall (and hence inertial frame) begins? But I also know that the body will speed up as it approaches the earth's center of gravity and hence won't remain in uniform motion. Suppose a tunnel is dug diametrically through the surface, the body would perform Simple Harmonic Motion across this tunnel speeding up and down between the tunnel ends. How is the geodesic playing a role in imparting an acceleration which we so call acceleration due to gravity in Newtonian mechanics?
Could it be, since the motion of an accelerating body follows a curvature in spacetime, a curvature in spacetime is automatically imparting an acceleration to the body?
I'm so confused.