Force on a sphere in a constant external electric field

[captain.joco]

Homework Statement

An uncharged solid sphere is paced in a constant external electric field E0. What is the force on the sphere?

Homework Equations

The Attempt at a Solution

I know ( already have found ) the electric potential and electric field around the sphere. Also worked out the surface charged density. I don't know how to calculate the force..Any help please?

 

[LowlyPion]

Isn't F = q*E ?

 

[captain.joco]

It seemed too simple somehow... Is q the induced charge on the sphere, and E the electric field close to the sphere??

Thank you for your help

 

[LowlyPion]

It seemed too simple somehow... Is q the induced charge on the sphere, and E the electric field close to the sphere??

Thank you for your help

If there is charge separation, what will the net force be?

 

[captain.joco]

Got it! Thanks a lot for the help!

 

[Tomboland]

This is the exact question i was looking for help with and still not sure of what the next step is.

I know the uniform E-field causes the sphere to gain an induced dipole. From this how do you get the force? Is it ok to just assume the E-field remains uniform.. this can't be right as there would then be no force and seems there must be a force from the way the question is worded.