PROBLEM 4.103
The 24-lb square plate shown is supported by three
vertical wires. Determine (a) the tension in each wire
when 10a
in., (b) the value of a for which the tension in
each wire is 8 lb.
PROBLEM 4.103 (Continued)
PROBLEM 4.104
The table shown weighs 30 lb and has a diameter of 4 ft. It is supported
by three legs equally spaced around the edge. A vertical load
P
of
magnitude 100 lb is applied to the top of the table at D. Determine the
maximum value of a if the table is not to tip over. Show, on a sketch,
the area of the table over which
P
can act without tipping the table.
PROBLEM 4.105
A 10-ft boom is acted upon by the 840-lb force shown. Determine
the tension in each cable and the reaction at the ball-and-socket
joint at A.
PROBLEM 4.105 (Continued)
z
PROBLEM 4.106
The 6-m pole ABC is acted upon by a 455-N force as shown.
The pole is held by a ball-and-socket joint at A and by two
cables BD and BE. For
3 m,a
determine the tension in
each cable and the reaction at A.
PROBLEM 4.106 (Continued)
PROBLEM 4.107
Solve Problem 4.106 for
1.5 m.a
PROBLEM 4.106 The 6-m pole ABC is acted upon by a 455-
N force as shown. The pole is held by a ball-and-socket joint
at A and by two cables BD and BE. For
3 m,a
determine
the tension in each cable and the reaction at A.
PROBLEM 4.107 (Continued)
PROBLEM 4.108
A 2.4-m boom is held by a ball-and-socket joint at C and by
two cables AD and AE. Determine the tension in each cable
and the reaction at C.