An electrical engineer in-charge for maintaining street lighting feels that a custommade ladder-cart produced specifically for changing bulbs would be useful. He complled the requirements by consulting the workers who would be using it and they are as follows: a. The foot area should be minimal b. Should be able to reach 5 metres height c. The number of steps should not exceed 18 d. The vertical height between steps is preferable around 0.3m e. Should be able to roll from place to place by a single person f. Should have storage space for tools and protective clothing g. Should have hand-rails ensuring safety h. Should have broad platform to stand i. Should be able to lock the ladder to the lamp post The Conceptual Design for a ladder-cart is shown in Figure Q3.1. The scheme can be explained as follows: The ladder is fitted on a cart and is supported by the back rails. Normally they are inclined at 50-60 degrees. The ladder carries a platform at the top. Hand-rails are welded onto the ladder. The cart has two wheels and two legs. It has additional wheels which are fitted to the cart through a screw. They are taken up when the cart is standing on the legs. You are required to do the following