What are the guiding principles when drawing free body diagrams in statics? And how do we do these?
What are the guiding principles when drawing free body diagrams in statics? And how do we do these?
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter10: Virtual Work And Potential Energy
Section: Chapter Questions
Problem 10.51P: The spring attached to the homogenous bar of weight W is undeformed when =0. Determine the smallest...
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What are the guiding principles when drawing free body diagrams in statics? And how do we do these? Thanks.
Transcribed Image Text:1. Uniform horizontal bar of mass m
suspended by vertical cable at A and
supported by rough inclined surface
5. Uniform grooved wheel of mass m
supported by a rough surface and by
action of horizontal cable.
at B.
A
m
2. Wheel of mass m on verge of being
rolled over curb by pull P.
6. Bar, initially horizontal but deflected
under load L. Pinned to rigid support
at each end.
B
3. Loaded truss supported by pin joint at
A and by cable at B.
7. Uniform heavy plate of mass m
supported in vertical plane by cable
C and hinge A.
B
т
4. Uniform bar of mas s m and roller of
mass m, taken together. Subjected to
couple M and supported as shown.
Roller is free to turn.
8. Entire frame, pulleys, and contacting
cable to be isolated as a single unit.
B
M
mo
m
Transcribed Image Text:Body
Wrong or Incomplete FBD
1. Lawn roller of
mass m being
pushed up
incline e.
P
mg
2. Prybar lifting
body A having
smooth horizontal
surface. Bar restS
on horizontal
rough surface.
R
3. Uniform pole of
mass m being
hoisted into posi-
tion by winch.
Horizontal sup-
porting surface
notched to prevent
slipping of pole.
T
Notch
F
4. Supporting angle
bracket for frame;
Pin joints.
F
5. Bent rod welded to
support at A and
subjected to two
forces and couple.
M
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