Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

A human cannon has a spring constant of 35 000 N/m. The spring can be extended up to 4.5m. How far horizontally would a 65kg clown be fired if the cannon is pointed upward at 45 degrees to the horizontal?

share|cite|improve this question

closed as too localized by David Z May 2 '13 at 3:58

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

Are you familiar with ideal springs? Do you know the formula for working with them? You need to show some level of effort. – Brandon Enright May 2 '13 at 2:13

Max. Energy in spring=$\dfrac12 kx^2$ that will get transfered into body of mass m=$65kg$ . So, $$\dfrac12 kx^2=\dfrac12 mv^2$$

here you get the velocity and then solve for range $$R\text{ange}=\dfrac{u^2sin(2\theta)}{g}=\dfrac{u^2}{g}\Bigg|_{\theta=45}$$

share|cite|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.