Magnitude and direction of the force on the electron

[collegekid420]

Homework Statement

An electron is moving in a quadratic potential of the form V(x)=k(x-x0)^2, where k=10V/m^2 and x0=5m. x is positive to the right and negative to the left. Find the Following

A. Find the magnitude and direction of the force on the electron at x = 0m

B. Find the magnitude and direction of the force on the electron at x = 5m

C. Find the magnitude and direction of the force on the electron at x = 10m

Homework Equations

The Attempt at a Solution

My attempt was to plug in k and x into the equation V(x) = k(x-x)^2 but I am not getting the right answers, where am I going wrong? Do I need to use the equation F=k(q1q2)/d^2?

 

[Redbelly98]

You need to find (in your textbook or class notes) the relation between force and potential.