Question

Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.60×106 N, one at an angle 13.0 west of north, and the other at an angle 13.0 east of north, as they pull the tanker a distance 0.700 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.

Answer 1

Answer:
`W=1.93* 10^9 J`

Step-by-step explanation:

Given

Force
`F=1.6* 10^(6) N`

one at an angle of
`13^(\circ)` East of North and another at
`13^(\circ)` West of North

Net Force is in North Direction

`F_(net)=2F\cos 13`

Forces in horizontal direction will cancel out each other

thus Work done will be by north direction forces

`W=2F\cdot \cos 30\cdot s`

here
`s=0.7 km`

`W=2* 1.6* 10^(6)\cdot \cos 30\cdot 700`

`W=1.93* 10^9 J`