A mass `m_(1)` is moving on a plane surface along a straight path under the action of a force F. Another mass `m_(2)` is added on to `m_(1)` and the acceleration drops to 1/5 of the ear her value of the acceleration. Assuming that F remains constant, what is the ratio `m_(1) : m_(2)` ?

Explanation

`2.4xx10^(39)` this is the ratio of electric force to the gravitational force between an electron and a proton