Prediction 1-1: Suppose you are president of the Load \'n\' Go Company. A local
ID: 3281405 • Letter: P
Question
Prediction 1-1: Suppose you are president of the Load 'n' Go Company. A local college has three jobs it needs to have done and it will allow your company to choose one before offering the other two jobs to rival companies. All three jobs pay the same total amount of money. Job A Lifting 100 50-lb boxes a distance of 20 ft 30 ft 20 ft 30° Job B Lifting 100 of the 50-lb boxes a distance of 30 ft bo Job C 10 ft Lifting 50 100-lb of 1os a distancealong a boxes a distance of 10 ft Which one would you choose for your crew? Explain why.Explanation / Answer
Prediction 1-1. The person will get tired by doing work. Hence the person should choose the job in which the work done by himself is less.
The work done can be calculate as
W = Number of boxes * weight of each box * acceleration due to gravity * height to rise
Job A, the work done is 100 * (50 * 0.4536) * 9.8 * (20 * 0.305) = 1.356 x 10^5 J
Job B, the work done is 100 * (50 * 0.4536) * 9.8 * (30 * 0.305 * Sin(30)) = 1.017 x 10^5 J
Job C, the work done is 50 * (100 * 0.4536) * 9.8 * (10 * 0.305) = 6.779 x 10^4 J
So, the person should choose the job C in which he need to lift things vertically upward 10 ft.