1. The problem statement, all variables and given/known data A gardener pulls a roller of mass 85 kg over a step. The roller has a radius of 0.25 m. The handle is attached to an axle through the centre of the roller at an angle of 45 degrees to the horizontal. Here's a link to the diagram below, it's figure 1 and 2 on question 18. https://books.google.co.uk/books?id...ing a roller of mass 85kg over a step&f=false 1) Determine the magnitude of the force that will just move the roller when the force is applied as shown in figure 1. 2) Determine the force which would be required if the handle was pulled horizontally. 2. Relevant equations Moment of a force = force x perpendicular distance 3. The attempt at a solution I don't know where to begin. I'm guessing you have to take the moments about a point but the question doesn't make sense to me. I would have thought the force would have depended on the steepness of the step which isn't given. Any help would be appreciated, thanks.