- #1

sphys4

- 21

- 0

## Homework Statement

When a third charge is placed at the origin, it is found that the force on it is zero. Find alpha?

Two charges Q and 5Q are located as shown in the figure below.

https://chip.physics.purdue.edu/protected/GiordanoEMimg/chapter17/17prob16.jpg

If possible, please show work so i can learn how to do it. Thanks!

## Homework Equations

## The Attempt at a Solution

I know that force varies as a function of charge and inversely proportional to square of distance.

So i need to use this equation somehow:

F = k Qa Qb / d^2