Vector Word Problem Help

1. Apr 23, 2013

hungrymouth

1. Let F = 1050N & θ = 24°. A tow truck drags a stalled car along a road. The chain makes an angle of θ degrees with the road, and the tension in the chain is F newtons. How much work W is done by the truck in pulling the car a distance D = 1km(1000m) along a horizontal road? Express the result in joules using scientific notation and three significant figures.

2. w = f*d

3. I don't have a clue how to approach this problem. I need some guidance as in approaching the problem so that I can solve the problem.

2. Apr 23, 2013

Simon Bridge

Start from the definition of work.
(In words - possibly.)

i.e. if the force were perpendicular to the direction of travel - how much work would it do?

Last edited: Apr 23, 2013
3. Apr 23, 2013

LCKurtz

And don't you mean $w = \vec f \cdot \vec d$? (Vectors and dot product)