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You are watching: What is the total work they do on the supertanker?
Two tugboats pull a disabled supertanker. Each tugwatercraft exerts a constant pressure of 1.50 X 10^6 N, one at an angle 15.0 levels west of north, and the various other at an angle 15.0 levels eastern of north, as they pull the tanker a distance 0.720 kilometres towards the north.
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Two tugwatercrafts pull a disabled supertanker. Each tugboat exerts a consistent force of 1.50 X 10^6 N, one at an angle 15.0 degrees west of north, and also the other at an angle 15.0 degrees east of north, as they pull the tanker a distance 0.720 km toward the north.
The pressure exerted by each tugboat have the right to be separated into two components: one of them in the direction of the north and also the various other towards the eastern and also the west. The components towards the west of the tugboat pulling in the direction 15.0 degrees west of north is equal to the component towards the eastern of the tugboat pulling in the direction 15.0 degrees eastern of north. These cancel out.
The other components add as much as give a total of 2*1.5*10^6*cos 15 = 3*10^6*cos 15.
As the tanker is pulled for a distance 0.720 km in the direction of the north, the product of the pressure and also the distance it acts for is 720*3*10^6*cos 15 = 2086.3*10^6 J
The total work done by the two tugwatercrafts is 559*10^6 J.
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