Final answer:
The question about the minimum number of tiedowns for a 20ft load is an engineering-related issue, specifically in transportation engineering or logistics. The number of tiedowns required depends on factors like cargo weight and regulations, which can differ regionally. The provided information about tension implies an initial tension of around 56 N to be increased by 20-fold.
Step-by-step explanation:
The student's question pertains to load securing, a topic that would fall under the subject of Engineering, specifically concerning transportation engineering or logistics. When securing a load, such as a 20ft load, it is essential to ensure that it is properly tied down during transit to avoid shifting that could lead to accidents or damage. In general, the number of tiedowns required can depend on various factors, including the weight and type of the cargo, the length of the cargo, and the specific rules that apply to the vehicle and roads being used.
Without citing specific regulations, which can vary by region and the type of transportation used (e.g., trucking regulations in North America governed by the Department of Transportation), a precise number of tiedowns cannot be provided. However, regarding the information given about tension, if the question refers to the necessary tension to secure the load, stating that 'the tension would need to be increased by a factor of approximately 20' and that it would be 'slightly less than 1128 N,' this implies that the initial tension was substantially lower. To potentially increase it by 20-fold would suggest initial tensions of around 56 N (1128 N / 20 = 56 N).