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Unformatted text preview: g ENGINEERING MECHANICS ~ STATICS, 2nd. Ed. 6*5 Draw a free~body diagram for the curved bar shown
in Fig. P6-5. SOLUTION The cable at B exerts a tensile forco T on the bar that is
tangent to the cable at point B.
The action of the pin at support C is represented by force components 6 and C .
x y 5~6 Draw a free-body diagram
for the angle bracket
shown in Fig. P6~6. ' SOLUTION The action of the pin at support A
is represented by force components
ﬁx and Ky. The roller at B exerts a compressive force 3 normal to the
surface of the bracket. ‘ ENGINEERING MECHANICS ~ STATICS, 2nd, Ed. w. F. RILEY AND L. D. STURGES 5 6-11 Draw a freewbody diagram
for the cart shOWH in Fig.
P6—11 which has a weight g. SOLUTION The cable exerts a force T on the cart
that is tangent to the cable at the
point of attachment. The weight W of the cart acts through the center of
gravity G of the cart and is directed
toward the center of the earth. The
support surface exerts normal forces 31
and NE on the wheels since the surface is assumed to be smooth. Draw a freewbody diagram
for the lawn mower shown
in Fig. 96—12 which has a
weight w and is resting on a rough surface. SOLUTION The weight W of the mower acts through
the center of gravity G of the mower
and is directed toward the center of
the earth. The support surface exerts normal forces N1 and 32 and frictional
forces ?1 and ?2 on the wheels since the surface is assumeé to be rough. D. STURGES : ENGINEERIKG MECHANICS ~ STATICS, 2nd. Ed. W. F. RILEY AND L. 6~30 Draw a free—body diagram for the bent bar shown in Fig. ?6*30. Supgorts at
B and C are ball bearings.
The horizontal and vertical surfaces at A are smooth. SOLUTION The smooth horizontal and vertical surfaces at A exert forces ﬁx and no A
z the two surfaces. The ball bearings on the bar that are normal to at supports B and C are represented
by force components ﬁx and §Y at
bearing B and force components ﬁx and éy at bearing C. 4) ...
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This note was uploaded on 07/05/2010 for the course ENGR 120 taught by Professor Jones during the Spring '10 term at Florida State College.
- Spring '10