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: Spring Catapult

  1. Oct 21, 2007 #1
    1. The problem statement, all variables and given/known data
    You shoot a 57 g pebble straight up with a catapult whose spring constant is 310 N/m. The catapult is initially stretched by 0.30 m. How high above the starting point does the pebble fly? Ignore air resistance.
    _____ m

    2. Relevant equations


    3. The attempt at a solution

    I am totally lost...this incorporates gravity and the spring...and ah...my head hurts...any one help?
  2. jcsd
  3. Oct 21, 2007 #2
    There's more than one way to solve this problem. Do you want to use the force of the spring to figure out its acceleration?

    Or to use conservation of energy?

    Can you think of any equations that might help you?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook