Answer:
The initial acceleration of the mass, if it is released and allowed to move =

Step-by-step explanation:
Given:
- Mass of each object,

- Charge on each object,

- Distance between the objects,

There are two forces that will act on these objects:
- Gravitational force due to masses of the objects, which is attractive.
- Electrostatic force due to the charges on the objects, which is repulsive because both the objects have positive charges.
The gravitational force between two masses
and
, separated by distance
is given by

where,
G is the Universal Gravitational constant, having value =

Therefore, the gravitational force between these masses is

The electrostatic force between two charges
and
, separated by distance
is given by

where,
k is the Coulomb's constant, having value =

Therefore, the electrostatic force between these masses is

Since, one force is attractive and another is repulsive, therefore, the net force that one mass exerts on another is given by

According to Newton's second law of motion,

It is the acceleration with which the mass starts to move.