Figure 1 shows two blocks connected by a rope that passes over a frictionless pulley. One block has mass, m1=2.5kg is placed on the top of a rough horizontal table (u=0.30) and is fastened to a hanging 1.8 kg block, m2. (a) Draw the free body diagram for both masses
(b) Calculate the magnitude of the blocks acceleration
(c) calculate the tension in the rope?

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.