(a) how strong is the attractive force between a glass rod with a 0.700 μc charge and a silk cloth with a –0.600 μc charge, which are 12.0 cm apart, using the approximation that they act like point charges? (b) discuss how the answer to this problem might be affected if the charges are distributed over some area and do not act like point charges.

a)

b) Greater attractive force

Explanation:

Assuming they are point charges, we can use coulomb's law to know the magnitude of the force between these objects:

Here, K is the Coulomb constant, and are the point charges and d is the distance bewteen the charges.

a) So, we have:

b) There will be a greater amount of charge on the side closest to the object with opposite charge, therefore this will increase the charge at that point, increasing the attractive force.

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.