The mass of a body which is equal to the ratio of the force acting on a body to the acceleration produced in the body is :

the inertial mass

The mass of a body which is equal to the ratio of the force acting on a body to the acceleration produced in the body is the inertial mass. 

• Inertial mass represents the mass discovered by merely applying a load and calculating its acceleration.
• Gravitational mass is defined as the mass calculated by dividing the weight of an object by g.
• The mass of something like a body may be computed by dividing the load exerted on it by its acceleration.
• Inertial mass is the name given to this mass.
• As a result, inertial mass is defined as the mass of a body calculated as the ratio of the forces applied on it to the acceleration induced by it.