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: PROBLEM -> Amount of Extension of Spring

  1. Apr 13, 2005 #1
    Any help on this would be greatly appreciated.

    In order to go stop the coaster at the end of its course, a spring has been installed. When the coaster stops, it stands at 2 m from the ground. If the total distance of the ride is 750 m, the friction is 500 N as before, the spring constant of the spring is 18400 N/m, and the coaster has a speed of 7 m/s at point A, find the amount (extension of spring) by which the spring is compressed when the coaster is brought to a stop.

    I need some hints on how to go about this problem... thanks
  2. jcsd
  3. Apr 14, 2005 #2


    User Avatar
    Science Advisor

    Leaving out some things aren't you?

    "When the coaster stops, it stands at 2 m from the ground."

    ?? Is the coaster going down? Are we to include gravitational force? Or are just assume the speed was 7 m/s when it hit the final level? Exactly where is point A? Apparently you have a picture that we can't see. "the friction is 500 N as before"- "as before"? What there a previous problem, including information you are not giving us here?
  4. Apr 16, 2005 #3
    Sorry you're right man. My sincere apologies. Here is a diagram:

    Attached Files:

  5. Apr 17, 2005 #4
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook