In the diagram below the two masses hanging over the pulley have values ma 35 kg and mb 38 kg. the (frictionless) pulley is a uniform cylinder or radius ro 0.381m and mass 3.1 kg. initially ma is on the ground while ma is 2.5m above the ground. if the system is released, determine the speed of ma just before it strikes the ground.

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.

umm its a tricky question