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PROBLEM 7.145
To the left of Point B the long cable ABDE rests on the rough
horizontal surface shown. Knowing that the mass per unit length
of the cable is 2 kg/m, determine the force F when a= 3.6 m.
PROBLEM 7.146
To the left of Point B the long cable ABDE rests on the rough
horizontal surface shown. Knowing that the mass per unit length
of the cable is 2 kg/m, determine the force F when a= 6 m.
PROBLEM 7.147*
The 10-ft cable AB is attached to two collars as shown. The
collar at A can slide freely along the rod; a stop attached to the
rod prevents the collar at B from moving on the rod. Neglecting
the effect of friction and the weight of the collars, determine the
distance a.
PROBLEM 7.147* (Continued)
PROBLEM 7.148*
Solve Problem 7.147 assuming that the angle
θ
formed by the
rod and the horizontal is 45°.
PROBLEM 7.147 The 10-ft cable AB is attached to two collars
as shown. The collar at A can slide freely along the rod; a stop
attached to the rod prevents the collar at B from moving on the
rod. Neglecting the effect of friction and the weight of the
collars, determine the distance a.
PROBLEM 7.148* (Continued)
PROBLEM 7.149
Denoting by
θ
the angle formed by a uniform cable and the horizontal, show that at any point (a) s = ctan
θ
, (b) y=c sec
θ
.
PROBLEM 7.150*
(a) Determine the maximum allowable horizontal span for a uniform cable of weight per unit length w if
the tension in the cable is not to exceed a given value Tm. (b) Using the result of part a, determine the
maximum span of a steel wire for which w= 0.25 lb/ft and Tm= 8000 lb.
PROBLEM 7.150* (Continued)
PROBLEM 7.151*
A cable has a mass per unit length of 3 kg/m and is
supported as shown. Knowing that the span L is 6 m,
determine the two values of the sag h for which the
maximum tension is 350 N.
