Force - Time graph Question

  1. Hi everybody,

    I was given a set of physics problems and some of them ask us to find work. The problem is, we are given a force-time graph as opposed to a force-distance graph. My question was whether there was a way of finding work done using a force-time graph. I don't see how it could be done and i haven't found anywhere where you can do it but I have a feeling it can be done.

    Does anyone know? Please reply either if it can or can't be done...

    Thank you
     
  2. jcsd
  3. Not if the force and dt are the only info given...
     
  4. Sry, ignore my last post. Yes, you can.
     
  5. Sorry, how can you find it out?

    I tryed the area under the graph but that doesn't work
     
  6. Sorry, how can you find it out?

    I tried the area under the graph but that doesn't work
     
  7. What kind of force-time graphs are they? I'm guessing they're impulse graphs (large force over relatively short period of time); if so, you can assume the impulse approximation. What does this tell you about the work done (or more precisely, the distance traveled due to a force)?
     
  8. Yes, they are graphs with large forces over small amounts of time.

    I'm sorry but I can't see the connection between this graph and work and/or distance.

    If it helps, one of the questions talks about a railway engine of x mass moving from rest along a straight track. It then gives you the force-time graph.
     
  9. It's ok now...I've figured out the answer

    Thanks everyone for your help
     
  10. Hi,

    I have the same question as you. How did you find the work done using force - time graph?? Thanks.
     
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