Download presentation

Presentation is loading. Please wait.

Published byLandyn Macey Modified about 1 year ago

1
Catapult Engineering & Design Grade 7 Pollard 2012

2
Design Challenge DESIGN & BUILD a Catapult that can launch a projectile at a target from a minimum distance of 10 feet

3
What is a CATAPULT? A machine used to throw or hurl a projectile great distances

4
What is a…. Projectile An object thrown into space by a force

5
Projectile Ping Pong Ball

6
CATAPULT in action

7
Specifications Can be NO larger than 10 ” long x 10 ” wide

8
Specifications Tower height can be NO taller than 10 inches

9
Specifications Throwing Arm can be NO longer than 12 inches long

10
Types of CATAPULTS

11
TREBUCHET? uses gravity & a seesaw effect to hurl its projectile

12
What is…. Gravity Force that cause 2 particles to pull towards each other

13
Gravity

14
What uses gravity to launch the projectile?

15
TREBUCHET

16
BALLISTA? basically a crossbow fastened to a mount

17
Research How to build a Catapult

18
BUT before you begin…..

19
Things to keep in mind Pivot Short shaft on the end of which something rests & turns

20
Pivot

21
Things to keep in mind Fulcrum pivot point on the arm

22
Fulcrum (Hole in the Arm)

23
Things to keep in mind Tension Stretching or straining

24
Tension (Elastic Bands when throwing arm is pulled back to launch projectile)

25
Things to keep in mind Compression To press together

26
Compression (Elastic Bands when throwing arm is released)

27
Things to keep in mind Newton ’ s Second Law of Motion

28
Acceleration is produced when a force acts on a mass Newton ’ s Second Law of Motion The greater the mass (of the projectile) the greater the amount of force needed to accelerate the projectile

29
Newton ’ s Second Law of Motion? CATAPULT

Similar presentations

© 2016 SlidePlayer.com Inc.

All rights reserved.

Ads by Google