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PROBLEM 7.135
A counterweight D is attached to a cable that passes over a small pulley at
A and is attached to a support at B. Knowing that L= 45 ft and h= 15 ft,
determine (a) the length of the cable from A to B, (b) the weight per unit
length of the cable. Neglect the weight of the cable from A to D.
PROBLEM 7.136
A 90-m wire is suspended between two points at the same elevation that are 60 m apart. Knowing that the
maximum tension is 300 N, determine (a) the sag of the wire, (b) the total mass of the wire.
PROBLEM 7.137
A cable weighing 2 lb/ft is suspended between two points at the same elevation that are 160 ft apart.
Determine the smallest allowable sag of the cable if the maximum tension is not to exceed 400 lb.
PROBLEM 7.138
A uniform cord 50 in. long passes over a pulley at B and is attached to a
pin support at A. Knowing that L= 20 in. and neglecting the effect of
friction, determine the smaller of the two values of h for which the cord is
in equilibrium.
PROBLEM 7.139
A motor M is used to slowly reel in the cable shown. Knowing that the
mass per unit length of the cable is 0.4 kg/m, determine the maximum
tension in the cable when h= 5 m.
PROBLEM 7.140
A motor M is used to slowly reel in the cable shown. Knowing that the
mass per unit length of the cable is 0.4 kg/m, determine the maximum
tension in the cable when h= 3 m.
PROBLEM 7.141
The cable ACB has a mass per unit length of 0.45 kg/m.
Knowing that the lowest point of the cable is located at a
distance a= 0.6 m below the support A, determine (a) the
location of the lowest Point C, (b) the maximum tension in
the cable.
PROBLEM 7.142
The cable ACB has a mass per unit length of 0.45 kg/m.
Knowing that the lowest point of the cable is located at a
distance a= 2 m below the support A, determine (a) the
location of the lowest Point C, (b) the maximum tension in
the cable.
PROBLEM 7.143
A uniform cable weighing 3 lb/ft is held in the position shown by a
horizontal force P applied at B. Knowing that P=180lband
θ
A =60°,
determine (a) the location of Point B, (b) the length of the cable.
PROBLEM 7.144
A uniform cable weighing 3 lb/ft is held in the position shown by a
horizontal force P applied at B. Knowing that P =150lband
θ
A=60°,
determine (a) the location of Point B, (b) the length of the cable.
