shurley197323 wrote:Please help!!!

A lawn roller has a diameter of 1.20 m and weighs 560N.

a) What is the minimum force needed to push the roller over a brick of height 0.100 m if the force is applied at the centre of the roller?

b) What is the minimum force needed to push the roller over a brick of height 0.100 m if the force is applied at the top of the roller?

Thank you <3

I have answered part a here in this diagram. This is a moments question. The first diagram is showing how to equate the clockwise moment to the anti-clockwise moment. The second diagram is showing how to work out the value of x, the distance of the line of action of the weight from the pivot point.