Solving Problems

Engineering

What is engineering?

What do engineers do?

What kinds of things do they build or make?

2

Technology

Simple

Complicated

Examples?

How do engineers make new technology?

Sample Footer Text

3

Engineering Challenge

WHAT PROBLEM DO WE WANT TO SOLVE?

• We want to throw a ball into a bucket with technology.
• We want to throw a ball as far as we can with technology.

WHAT TECHNOLOGY COULD WE CREATE?

• Any Ideas?
• What technology exists that could throw a ball for us?

4

• What about a catapult?

Catapults

HISTORY

• Who has heard of catapults?
• Used for thousands of years
• Types of catapults

MODERN CATAPULTS

• What are they used for now?
• Toys
• Launching airplanes on short runways
• Others

5

Catapults store energy and release it to throw a projectile.

Geometry �Geometry is a branch of mathematics that studies the sizes, shapes, positions angles and dimensions of things

6

Triangles are very strong!!

Velocity, Force, and Acceleration

• Which forces are important for catapults?
• Gravity
• Elastic or Spring Force
• We need to store energy and release it to get the force we need.

​

7

• What kinds of forces are there?

• Velocity is the speed of an object

• Forces influence motion of an object

• Acceleration is a change in velocity of an object

Which of these have elasticity?

8

Elastic materials are good at storing energy!

A materials ability to squish and stretch and change shape, but then return to its original shape

Where is the energy stored?

9

Projectiles and Angles

THE ANGLE MATTERS!

• Different angles will make the ball travel on different paths
• 45 degrees will give you the longest distance

10

45 Degrees

Let’s engineer some catapults!!

11

Safety Tips – Catapult Rules.

12

Review – What have we learned?

Groups Present

Why did you choose that design?

What problems did you have?

What solutions did you find?

​

Discussion between groups.

Thank You

Any questions for us?

13