Show that the wheel weight is 180N given force to move it over kerb

[aurao2003]

Homework Statement

Hi
I am not sure about this question. Can anyone help?

It states this way:
A wheel of radius 0.5m rests on a level at a point C and makes contact with the edge E of a kerb of height 0.2m. A horizontal force of 240N, applied through the axle of the wheel at X, is required just to move the wheel over the kerb. Show that the weight of the wheel is 180N.

Homework Equations

Moment = Perpendicular force x distance

The Attempt at a Solution

I was thinking of taking moments but not even sure how to begin.

 

[Stonebridge]

I have replied to this on TSR.