What can we say about the force of an object when the mass increases and acceleration remains constant?

Answer 1

Depending on the amount the mass is increased by, we can say that the force of the object is increase by x amount of mass.

Example. If m2 = 3m1, a2 = a1 than F2=?F1

F2=m2a2 -> F2=3(m1)(a1)

you see that (m1)(a1) is F1.

In conclusion, F2 = 3F1.