IIOin.~lOin.
r
7.')1)
PROBLEM 4.25
Determine the reactions at A and B when (a) a = O. (b) a = 90°,
(e) «=30°,
lb. ill.
12 in.
SOLUTION
a=O
(a)
+jI:M A =0:
B(20in.)-750Ib·in.=O
B=37.51b
.±.IF,=O: A,=O
PROBLEM 2.46
Ropes AB and AC are thrown to a boater whose canoe had capsized.
Knowing that a = 25° and that the magnitude of the force FR exerted by
the river on the boater is 70 1b, determine the te
PROBLEM 3.98
Q - * it! A 5-m-long beam is subjected to a variety of loadings. (a) Replace each
" loading with an equivalent force-couple system at end B of the beam.
,,,,,, a. .
PROBLEM 2.46
75'
Two eables are tied together at C and are loaded as shown. Detennine the tension
(0) in cable AC, (b) in cable Be.
.c7~"_-lC
SOLUTION
.
Force Triangle
Free-Body Diagram
W=mg
= (200 kg
,
PROBLEM 2.71
\-)IX) K
Determine (a) the x, y, and z components of the 750-N force, (b) the
angles 8.", ~, and B. that the force forms with the coordinate axes.
"',
•
,
SOLUTION
Fh =Fsin 35 0
= (750
PROBLEM 2.99
Three cables are used to tether a balloon as shown. Determine the
vertieal force P exerted by the balloon at A knowing that the tension
in cable AD is 259 N.
,
SOLUTION
1;"
\
o
'"I.to.
Th
PROBLEM 3.1
A foot valve for a pneumatic system is hinged at B. Knowing
that a = 28°, detennine the moment of the 16-N force about
Point B by resolving the force into horizontal and vertical
component
PROBLEM 3.39
Consider the volleyball net shown.
Determine the angle formed by guy
wires AD and AC.
SOLUTION
and
AB =
~(-6.5)' + (-S)' + (2)'
AC =
First note
~(O)' + (-S)' + (6)'
= 10.5 ft
= 10 ft
AB =
PROBLEM 3.75
The shafts of an angle drive are acted upon by the two couples shown.
Replace tbe two couples whh a single equivl:llent COUpllC, specifYing its
magnitude and the direction of its axis.
,
ZOO N
"
400 N
~ ~_.'mlllll[;,-:i2"
PROBLEM 3.102
A 4-m-long beam is loaded as shown. Detennine the loading of
Problem 3.101 which is equivalent to this loading.
N",
SOLUTION
We have
and
I:F,' -200N-4o
VA Health
and Dental Care
for Veterans of
Operations Enduring
Freedom, Iraqi
Freedom, and New
Veterans of OEF/OIF/OND
VA provides
provides enhanced
enhanced
VA
enrollment opportunity
opportunity and
a