To determine the total work done on the load, we need to calculate the work done in raising the load vertically and the work done in moving the load horizontally.
First, let's calculate the work done in raising the load vertically:
Work = force × distance × cos(theta)
where force is the weight of the load, distance is the vertical distance lifted, and theta is the angle between the force and the direction of motion (which is 0 degrees in this case since the force is vertically upward).
So, in this case, the force is the weight of the load, which is given as 900 Newtons, and the distance lifted is 5 meters.
Work = 900 N × 5 m × cos(0°) = 4500 Joules
Next, let's calculate the work done in moving the load horizontally:
Work = force × distance × cos(theta)
In this case, the force is the same as the weight of the load, which is 900 Newtons, and the distance moved horizontally is 20 meters. However, in this case, theta is 90 degrees since the force is acting horizontally.
Work = 900 N × 20 m × cos(90°) = 0 Joules
Since the cosine of 90 degrees is 0, the work done in moving the load horizontally is 0.
Therefore, the total work done on the load is the sum of the work done vertically and horizontally:
Total Work = Work vertically + Work horizontally
= 4500 Joules + 0 Joules
= 4500 Joules
So, the total work done on the load is 4500 Joules.