A hand truck and its load, as shown below, have a mass of lkg, and their centre of gravity' {together} is at point C. What force F must the delivery.r person exert at the handles A of the hand truck to move it up the hill? Hint: In what direction is the force at the axle? Bonus question: Howr could the delivery person reduce the magnitude of the force they.r must exert? 0.? A retaining wall is 5m long {into the plane of the paper}, and it is supported by an anchor rod. The soil it supports has a weight density of 1.4 metric tonnes per cubic metre and K=O.25. Anchor rod 1m 3m 3} What horizontal pressure distribution does the retained soil generate against the wall?I b} What moment does that pressure distribution generate about C, the base of the wall? Report you answer as being for the full, 5 metre length [into the pa per} of the wall. :2} What Force. F must the anchor rod produce to stop the wall from overturning? cl} How much force R must the soil at the base of the wall or some other source of force exert in the direction shown, per metre of wall length (into the plane of the paper], to keep the base from pushing out? That is to say, what is the horizontal component of the reaction at the pin support at C per metre of wall length?I