To find the total work done on the load, we need to calculate the work done in lifting the load and the work done in carrying the load horizontally.
The work done in lifting the load can be calculated using the formula:
work = force × distance × cos(θ)
Where force is the weight of the load (900 N), distance is the height lifted (5 m), and θ is the angle between the force vector and the displacement vector. Since the load is lifted straight up, θ is 0 degrees, and the cos(0) is equal to 1.
work = 900 N × 5 m × cos(0)
work = 4500 J
The work done in carrying the load horizontally can be calculated using the formula:
work = force × distance × cos(θ)
Where force is the weight of the load (900 N), distance is the horizontal distance (20 m), and θ is the angle between the force vector and the displacement vector. Since the load is carried horizontally, θ is 90 degrees, and the cos(90) is equal to 0.
work = 900 N × 20 m × cos(90)
work = 0 J
Therefore, the total work done on the load is:
total work = work lifting + work carrying
total work = 4500 J + 0 J
total work = 4500 J
A forklift lifts a 900-Newton load 5 meters high. It then carries this load to a horizontal distance of 20 meters. Determine the total work done on the load.
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