INTRODUCTION
The aim of is to design is to fabricate and test a device that will “transport” up to (context: what is the purpose of this document?) about 4000 plastic BBs of the diameter of 6 mm and mass of 0.20 grams each, (run-on sentence) at least, half of the BBs placed in the initial container must end up in the receiving containers. There is a minimum of 1000 BBs in the initial container at the start. The two receiving containers are at least 12.0 inches, horizontally, from the initial container. The BBs are elevated from their initial level at least 12.0 inches at some point. (time, weight and space limits)
The system to be set works with only gravitational pull energy and a pulley system that is used to raise the BBs from an initial position before they are made to roll under gravity in a frictionless through that is designed in such a way that only same sizes pass through at a particular section. (no need to describe the solution just state that the solution is described in the next section
Concept (?)
CONCEPT
In this document, the details of the way forward to design a working device for the problem is discussed step per step. Mechanical design expertise is used to fabricate a design which should explain how to sort out and raise the BBs to level described. The first step is to design a way in which the BBs have raised up the ground. The figureFigure 1 below shows how the pulley system will be used to raise the BBs up the ground level. (could be written better)
Figure 1: Raising the BBs up the ground level. (need to improve figure not 3D)
Another challenge is that a large number of BBs balls must be separated into two containers equally. This (pronoun) is achieved by transferring the content of the container from the pulley into another empty bucket (container) that has a runway into a frictionless through.(?) The through through(?)has regions of separations that has openings of varying sizes which will assist in sorting the BBs into their respective containers. The separating cards fixed at the trough serve the purpose of separating the different sizes of BBs. The figure below Figure 2 shows how this (pronoun) is achievable using a frictionless through inclined at an angle to increase the gradient to which gravity will cause the BBs to roll to the other containers. (writing)
Figure 2: BBs are rolling on a frictionless trough under gravity. (where did you get this figure. It does not seem to fit this problem. Copying figures from other sources and turning them as your own is a violation of academic honesty)
The system is found to work effectively provided the BBs are raised up to the bucket that channels them into the frictionless trough. The rare end of the frictionless though is fitted with a container that finally collects the BBs at described length of 12 inches from the initial position of the BBs. By so doing the problem of separating and sorting BBs during the processing stage is well explained. The various sizes of the BBs will be collected finally separately as shown in the combined diagram below. (again need help in writing)
Figure 3: Combined process of sorting out BBs.
During sorting out of the BBs in the frictionless trough, an external force may be required to physical remove the BBs of the large size that may accumulate in the section if so many BBs are required at a time to be separated but for this paper, only 4000 pieces were considered which is achievable per time. The centre of the frictionless trough has an opening that only allows medium size BBs to trickle down to the second container hence leaving the small sized BBs to pass through to the third container.
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