# Math Help - Wheel and forces

1. ## Wheel and forces

Hi

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.

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

2. take moments around the point E

$W(0.1\sqrt{5^2-3^2})=240(0.5-0.2)
$

3. Hi
Thanks for your response. Can you kindly expand on the LHS of the equation. I dont fully understand how you obtained the perpendicular distance of the weight?

Thanks