1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Vector Word Problem Help

  1. Apr 23, 2013 #1
    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. jcsd
  3. Apr 23, 2013 #2

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper

    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
  4. Apr 23, 2013 #3


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    And don't you mean ##w = \vec f \cdot \vec d##? (Vectors and dot product)
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted