Are the values of acceleration of different masses obtained equal to g acceleration due to gravity on earth?
The value of “g” is essentially unaltered regardless of where you care to measure it on the earth´s surface. The results only reflect that the shape of the body is making their accelerations different. This is because there is natural drag created between the body and the friction against the atmosphere. If you were to carry out this same experiment in a vacuum, you would see the three objects would reflect the same acceleration, indeed, the same as in Galileo´s experiment ( where he threw different size balls from the tower of Pisa ) you would get impact of the three objects at the same time.
this question is a bit confusing but I’ll try. For starters, gravity (g) never changes, it is a constant, and as such it remains the same no matter where you are, it also effect’s all objects indifferently with equal force. as for the acceleration of different weighted objects, if they were accelerated along a horizontal platform with equal force of acceleration, then they differ in results due to mass and not gravity as each of them have the same acceleration due to gravity, although in reality gravity will have minute effects on each in the form of friction, but usually friction is attemptedly avoided via lubrication and other methods.