4) Two charges q1 and q2 are placed Δx apart. A third particle of mass 20 µg and charge q3 is placed between the two particles such that it is 25 cm from particle q1 as shown in the diagram below. Determine the magnitude and direction of the acceleration of q3 due to the net force on it by the two other charges.

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.