# How to control an angle of a catapult

1. Oct 17, 2006

### 7elwa

hi everyone.. this is my first post

im investigating a catapult
i would like to know how to control an angle of a catapult to get maximum distance ?

thanks ..

Last edited: Oct 17, 2006
2. Oct 17, 2006

### kcirick

I don't know if I'm answering this right:
1) Max distance can be achieved by setting the angle to 45 degrees (assuming no air friction on the projectile)

2) What do you mean a striking power?

3. Oct 17, 2006

### OlderDan

45 degrees will give you the maximum range for a given initial velocity, but 45 degrees might not give the maximum initial velocity, so 45 degrees is not automatically going to give maximum range.

4. Oct 17, 2006

You may want to write down the equations of displacement for projectile motion, and try to express the angle of catapultation out of them somehow. See where it will get you. Also, you must assume the value of initial velocity.

5. Oct 18, 2006

### 7elwa

thanx all for your replies ..
..