Engineering
&
Technology
Foundations
of
Seventh e e e v Edition
by
R. Thomas Wright
Professor f es es es e so so s Emeritus, Indus u st st st s ry ry ry ry r y y and a Technology n n ol o y y y
Ball ll l l l State S S S e University
Muncie, Mu Mu Mu nc nc Indiana d d d
Greg J. Strimel
Assistant Professor, ss s s s s r, r, r, , Engineering in in in e e e e e e ri ri ri ng ng ng and a a nd nd nd Technology T e Teacher he he he Education Ed Ed Ed E
P Pu Pu Pu rdue rd rd d ue ue University U U U ni ni ni ve ve rs it it it y y y
West Lafayette, Indiana In In I
Michael E. Grubbs
Supervisor, u u u p p p Manufactu t t t t u ur u ing, n n n g g Technology, ch c c c hn h h h og o and a a a a n n Engineering n n e e e e Educationcu u u c c
Baltimore lt lt t i i i County Public i i i c c c Schoolsc
Baltimore, m m m Maryland
Publisher u u u b b b
The h Goodheart-Willcox o e e e e e a a a W W Company, o o o o m a a a Inc.
Tinley Ti Park, IL L
www.g-w.com ww ww ww w. w. w. g- g- g w. w. w. o co co m m m