# A particle of charge #-2*10^-9#C is acted on by a downward electrostatic force of #3*10^-6# N when placed in this field. The gravitational and electrostatic force respectively exerted on a proton placed in this field are???

##### 1 Answer

#### Explanation:

Let's use the equation

Considering downwards to be the "negative" direction:

Then, we can apply the same equation to find the electrostatic force that will act on a proton if it were placed in this field:

Now, the equation for the force due to gravity can be found using the equation