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Apago PDF Enhancer
Apago PDF Enhancer
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Apago PDF Enhancer
ISBN: 0073380288
Author: Beer, Johnston, Dewolf,
and Mazurek
Title: MECHANICS OF MATERIALS
Front endsheets
Color: 4
Pages: 2, 3
U.S. Customary Units and Their SI Equivalents
Quantity U.S. Customary Units SI Equivalent
Acceleration ft/s
2
0.3048 m/s
2
in./s
2
0.0254 m/s
2
Area ft
2
0.0929 m
2
in
2
645.2 mm
2
Energy ft ? lb 1.356 J
Force kip 4.448 kN
lb 4.448 N
oz 0.2780 N
Impulse lb ? s 4.448 N ? s
Length ft 0.3048 m
in. 25.40 mm
mi 1.609 km
Mass oz mass 28.35 g
lb mass 0.4536 kg
slug 14.59 kg
ton 907.2 kg
Moment of a force lb ? ft 1.356 N ? m
lb ? in. 0.1130 N ? m
Moment of inertia
Of an area in
4
0.4162 3 10
6
mm
4
Of a mass lb ? ft ? s
2
1.356 kg ? m
2
Power ft ? lb/s 1.356 W
hp 745.7 W
Pressure or stress lb/ft
2
47.88 Pa
lb/in
2
(psi) 6.895 kPa
Velocity ft/s 0.3048 m/s
in./s 0.0254 m/s
mi/h (mph) 0.4470 m/s
mi/h (mph) 1.609 km/h
Volume, solids ft
3
0.02832 m
3
in
3
16.39 cm
3
Liquids gal 3.785 L
qt 0.9464 L
Work ft ? lb 1.356 J
SI Prefixes
Multiplication Factor Prefix † Symbol
1 000 000 000 000 5 10
12
tera T
1 000 000 000 5 10
9
giga G
1 000 000 5 10
6
mega M
1 000 5 10
3
kilo k
100 5 10
2
hecto‡ h
10 5 10
1
deka ‡ da
0.1 5 10
21
deci ‡ d
0.01 5 10
22
centi ‡ c
0.001 5 10
23
milli m
0.000 001 5 10
26
micro m
0.000 000 001 5 10
29
nano n
0.000 000 000 001 5 10
212
pico p
0.000 000 000 000 001 5 10
215
femto f
0.000 000 000 000 000 001 5 10
218
atto a
† The first syllable of every prefix is accented so that the prefix will retain its identity.
Thus, the preferred pronunciation of kilometer places the accent on the first syllable, not
the second.
‡ The use of these prefixes should be avoided, except for the measurement of areas and vol-
umes and for the nontechnical use of centimeter, as for body and clothing measurements.
Principal SI Units Used in Mechanics
Quantity Unit Symbol Formula
Acceleration Meter per second squared
p
m/s
2
Angle Radian rad †
Angular acceleration Radian per second squared
p
rad/s
2
Angular velocity Radian per second
p
rad/s
Area Square meter
p
m
2
Density Kilogram per cubic meter
p
kg/m
3
Energy Joule J N ? m
Force Newton N kg ? m/s
2
Frequency Hertz Hz s
21
Impulse Newton-second
p
kg ? m/s
Length Meter m ‡
Mass Kilogram kg ‡
Moment of a force Newton-meter
p
N ? m
Power Watt W J/s
Pressure Pascal Pa N/m
2
Stress Pascal Pa N/m
2
Time Second s ‡
Velocity Meter per second
p
m/s
Volume, solids Cubic meter
p
m
3
Liquids Liter L 10
23
m
3
Work Joule J N ? m
† Supplementary unit (1 revolution 5 2p rad 5 3608).
‡ Base unit.
bee80288_ifc.indd Page 1 10/26/10 4:39:07 PM user-f499bee80288_ifc.indd Page 1 10/26/10 4:39:07 PM user-f499 /Volumes/201/MHDQ251/bee80288_disk1of1/0073380288/bee80288_pagefiles/Volumes/201/MHDQ251/bee80288_disk1of1/0073380288/bee80288_pagefiles
Apago PDF Enhancer
ISBN: 0073380288
Author: Beer, Johnston, Dewolf,
and Mazurek
Title: MECHANICS OF MATERIALS
Front endsheets
Color: 4
Pages: 2, 3
U.S. Customary Units and Their SI Equivalents
Quantity U.S. Customary Units SI Equivalent
Acceleration ft/s
2
0.3048 m/s
2
in./s
2
0.0254 m/s
2
Area ft
2
0.0929 m
2
in
2
645.2 mm
2
Energy ft ? lb 1.356 J
Force kip 4.448 kN
lb 4.448 N
oz 0.2780 N
Impulse lb ? s 4.448 N ? s
Length ft 0.3048 m
in. 25.40 mm
mi 1.609 km
Mass oz mass 28.35 g
lb mass 0.4536 kg
slug 14.59 kg
ton 907.2 kg
Moment of a force lb ? ft 1.356 N ? m
lb ? in. 0.1130 N ? m
Moment of inertia
Of an area in
4
0.4162 3 10
6
mm
4
Of a mass lb ? ft ? s
2
1.356 kg ? m
2
Power ft ? lb/s 1.356 W
hp 745.7 W
Pressure or stress lb/ft
2
47.88 Pa
lb/in
2
(psi) 6.895 kPa
Velocity ft/s 0.3048 m/s
in./s 0.0254 m/s
mi/h (mph) 0.4470 m/s
mi/h (mph) 1.609 km/h
Volume, solids ft
3
0.02832 m
3
in
3
16.39 cm
3
Liquids gal 3.785 L
qt 0.9464 L
Work ft ? lb 1.356 J
SI Prefixes
Multiplication Factor Prefix † Symbol
1 000 000 000 000 5 10
12
tera T
1 000 000 000 5 10
9
giga G
1 000 000 5 10
6
mega M
1 000 5 10
3
kilo k
100 5 10
2
hecto‡ h
10 5 10
1
deka ‡ da
0.1 5 10
21
deci ‡ d
0.01 5 10
22
centi ‡ c
0.001 5 10
23
milli m
0.000 001 5 10
26
micro m
0.000 000 001 5 10
29
nano n
0.000 000 000 001 5 10
212
pico p
0.000 000 000 000 001 5 10
215
femto f
0.000 000 000 000 000 001 5 10
218
atto a
† The first syllable of every prefix is accented so that the prefix will retain its identity.
Thus, the preferred pronunciation of kilometer places the accent on the first syllable, not
the second.
‡ The use of these prefixes should be avoided, except for the measurement of areas and vol-
umes and for the nontechnical use of centimeter, as for body and clothing measurements.
Principal SI Units Used in Mechanics
Quantity Unit Symbol Formula
Acceleration Meter per second squared
p
m/s
2
Angle Radian rad †
Angular acceleration Radian per second squared
p
rad/s
2
Angular velocity Radian per second
p
rad/s
Area Square meter
p
m
2
Density Kilogram per cubic meter
p
kg/m
3
Energy Joule J N ? m
Force Newton N kg ? m/s
2
Frequency Hertz Hz s
21
Impulse Newton-second
p
kg ? m/s
Length Meter m ‡
Mass Kilogram kg ‡
Moment of a force Newton-meter
p
N ? m
Power Watt W J/s
Pressure Pascal Pa N/m
2
Stress Pascal Pa N/m
2
Time Second s ‡
Velocity Meter per second
p
m/s
Volume, solids Cubic meter
p
m
3
Liquids Liter L 10
23
m
3
Work Joule J N ? m
† Supplementary unit (1 revolution 5 2p rad 5 3608).
‡ Base unit.
bee80288_ifc.indd Page 1 10/26/10 4:39:07 PM user-f499bee80288_ifc.indd Page 1 10/26/10 4:39:07 PM user-f499 /Volumes/201/MHDQ251/bee80288_disk1of1/0073380288/bee80288_pagefiles/Volumes/201/MHDQ251/bee80288_disk1of1/0073380288/bee80288_pagefiles
Apago PDF Enhancer
MECHANICS OF
MATERIALS
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