The law that states force is dependent on the mass and acceleration of an object is Newton's Second Law of Motion.

It is mathematically expressed as:

F = m * a

where:

* F is the force applied to the object

* m is the mass of the object

* a is the acceleration of the object

This law basically means that a larger force is required to accelerate a heavier object, and a larger force is also needed to produce a greater acceleration for a given mass.