1. Simple Machines
Gillis
Sci 421

2. What is a Machine?
Machine
Product
Materials
Object
Output
Input

3. What is a Machine? Example - TV
Electricity
Picture TV
Sound
Signal
Object
Output
Input

4. What is a Machine? Simple Machine
Force
Force
Object
Output
Input

5. Forces How do we describe it? Size (magnitude) Direction
What is a Force?
Push or Pull
What does it do?
Causes Motion
How do we describe it?
Size (magnitude)
Direction

6. Why do we use simple machines?
To make life easier!
Simple Machines change forces:
change the direction
change the size
change both

7. What are the 6 simple machines?
Inclined Plane
Wedge
Screw
Lever
Wheel and Axle
Pulley

8. How do simple machines work?
Conserve Energy
Applied Resultant
Force x Distance = Force x Distance
force x Distance = Force x Distance

9. Incline Plane
Change Force Direction
Change Force Size

10. Wedge
Change Force Direction
Change Force Size

11. Screw
Change Force Direction
Change Force Size

12. Lever Change Force Direction Change Force Size
Resulting Force X Distance = Applied Force X Distance

13. Wheel and Axle Same Direction Change Force Size
Resultant Force X Wheel Radius = Applied Force X Axle Radius

14. Gears
Change Force Direction
Change Force Size

15. Pulley
Change Force Direction
Same Force Size

16. Scavenger Hunt Find the Simple Machines

17. In Your Classroom

21. SRB’s Are Recovered after Splashdown

24.
JSC Digital Image Collection
Press Release Images
NASA Photo ID: S File Name: jpg
Film Type: 120 b&w Date Taken: 07/18/66
Title: Time exposure of Gemini 10 launch.
Description:
The Gemini 10 spacecraft is launched from Complex 19 at 5:20 p.m.,
July 18, A time exposure creates the illusion of multiple rocker arms.
Onboard are astronauts John W. Young and Michael Collins, command pilot
and pilot, respectively.
Subject terms:
GEMINI 10 FLIGHT
GEMINI PROJECT

25. Hubble! http://grin.hq.nasa.gov/ABSTRACTS/GPN-2000-001066.html GRIN
NASA Center:
Johnson Space Center
Image # :
STS
Date :
02/19/1997
Hubble Redeployment
Full Description
Attached to the "robot arm" the Hubble Space Telescope is unberthed
and lifted up into the sunlight during this the second servicing
mission designated HST SM-02.
Keywords
STS-82 Discovery Payload Bay Hubble Space Telescope HST Remote Manipulator System RMS Canada Arm
Subject Category
Space Shuttle, Hubble,
Reference Numbers
Center: JSC
Center Number: STS
GRIN DataBase Number: GPN