Motion of particle if gravitational charge-mass ratio is changed

[Astrodood]

Homework Statement

Two particles are falling in a lab frame. The charge to mass ratio of particle one is held at 1, while the charge to mass ratio of particle 2 is changed from 1 to 0.5. How does the motion of the second particle changed with respect to the first. Would this change cause particle 2 to interact with the gravitational field resulting in faster acceleration or slower acceleration?

 

[mfb]

Charge of what? Gravitational charge? In Newtonian mechanics, this would change the acceleration. In General Relativity, this is not possible, gravitational charge and mass are always proportional to each other.