Work done by a constant force:
Let the positive y-axis point to the north and positive x-axis to the east.
Both angles are measured from the y-axis.
Fy = Fcosθ
Fx = Fsinθ
The x-component point in opposite directions.
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.90×106 N, one at an angle 19.0 west of north, and the other at an angle 19.0 east of north, as they pull the tanker a distance 0.870 km toward the north.
What is the total work done by the two tugboats on the supertanker?
Express your answer in joules, to three significant figures.
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