physics: engineering mechanics i chapters 1, 2, 3 1
TRANSCRIPT
Physics:Engineering Mechanics I
Chapters 1, 2, 3
1
Units
• SILength Mass Time
• U.S. CustomaryLength Mass Time
2
Weight and Mass (US units)!?!?!
• Force (lbf)
• Mass (lbm, slugs)
3
Unit Conversion Example
• Convert kg m2/s2 to U.S. Customary units
4
5
Chapter 3 - Vectors
6
7
b =7 i + 3 j
7 i
3 j
8
9
Chapter 2 –Motion Along a Straight Line
10
Motion – intro
• position
• displacement
11
speed
velocity
12
• Averagevelocity
• Instantaneousvelocity
13
Position x
Velocity v
Acceleration a
14
• Averagevelocity
• Instantaneousvelocity
acceleration
acceleration
15
Constant Acceleration
Method 1
16
17
Method 2
18
Method 3