After a great many contacts with the charged ball, how is any charge on the rod arranged (when the charged ball is far away)? there is positive charge on end b and negative charge on end a. there is negative charge spread evenly on both ends. there is negative charge on end a with end b remaining neutral. there is positive charge on end a with end b remaining neutral. the conducting rod is not grounded, so a negative charge accumulates on one end, but a charge cannot remain at a single end in a conductor, so it will spread to both ends: there is negative charge spread evenly on both ends

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.