How could you keep an object's acceleration the same if the force acting on the object were doubled?

[tex]Force=mass*acceleration [/tex]If you double the force, but want to keep acceleration the same, then you must double the mass as well.[tex]Force=mass*acceleration \\ (2)Force=(2)mass*acceleration[/tex]

If the force on an object suddenly doubles, but for some reason you want the object to keep the same acceleration, then you have only two choices:#1). Immediately apply another new force to the object, in the direction opposite to the first force, and equal to what the first force was before it doubled.#2).  Somehow ... while it's accelerating ... glue more pieces onto the objectsufficient to double its mass.