# Simple Machines - PowerPoint PPT Presentation

PPT – Simple Machines PowerPoint presentation | free to view - id: 78abd9-NDE4Y

The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
Title:

## Simple Machines

Description:

### Simple Machines Simple Machines Machines are tools that make jobs easier by: Changing the size of the force Changing the direction of the force Increasing the speed ... – PowerPoint PPT presentation

Number of Views:164
Avg rating:3.0/5.0
Slides: 14
Provided by: TheAt5
Category:
Tags:
Transcript and Presenter's Notes

Title: Simple Machines

1
Simple Machines
2
Simple Machines
• Machines are tools that make jobs easier by
• Changing the size of the force
• Changing the direction of the force
• Increasing the speed or distance the object is
moved

3
Simple Machines
• Inclined plane
• Wedge
• Screw

4
Simple Machines
• Lever
• Pulley

Wheel Axle
5
• MA is the number of times a machine multiplies
the force being applied
• Ideal mechanical advantage (IMA) is the number of
times the applied force is multiplied under ideal
conditions. This assumes no friction!

6
• Actual mechanical advantage (AMA) is the number
of times the applied force is multiplied under
real conditions

7
Calculating IMA
•

8
Calculating IMA
For a ramp 10m long and 2m high

• dEramp length10m

dR ramp Height2m
9
Calculating AMA
•

10
Calculating AMA
•

11
Efficiency
•

12
Efficiency
•

13
Word Problems
• RTDQ Read the darn question!
• What is the question asking me to find?
• What information do I have in the problem? Draw a
picture!
• If I dont have enough information, is it a
two-step problem?