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: Impulse ?

  1. Jun 3, 2007 #1
    Two forces produce equal impulses but the second force acts for a time twice that of the first force. Which force, if either is larger?

    I derived it using the formula but not too sure if this is the right soultion

    Ft = impulse
    Impulse are the same for the two forces so let impulse = 100N.s
    let time = 10s
    Ft= 100
    F(10) = 100
    F = 10N

    F(2t) = 100
    F(20) = 100
    F = 5N
    therefore the first force is larger
    Is that the right approach?
  2. jcsd
  3. Jun 3, 2007 #2
    sure but if you wanted do it more rigorously

    [tex]F_1t=I=F_22t \therefore \frac{F_1}{F_2}=\frac{2}{1}[/tex]
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook