A 50 kg traffic light is suspended by two inelas- tic (not elastic) 21 m cables which have a mass of 1.2 kg per meter of length. The cable is such that before the traffic light is added/hanged, the hori- zontal distance from the lowest point of the cable to the end point(s) is/are 20 m. The weight of the traffic light leads to deflection such that position A changes as soon the the weight of the light is added. Answer the following: (a) The above is catenary, explain why? (b) Determine the vertical deflection & of the
A 50 kg traffic light is suspended by two inelas- tic (not elastic) 21 m cables which have a mass of 1.2 kg per meter of length. The cable is such that before the traffic light is added/hanged, the hori- zontal distance from the lowest point of the cable to the end point(s) is/are 20 m. The weight of the traffic light leads to deflection such that position A changes as soon the the weight of the light is added. Answer the following: (a) The above is catenary, explain why? (b) Determine the vertical deflection & of the
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:A 50 kg traffic light is suspended by two inelas-
tic (not elastic) 21 m cables which have a mass of
1.2 kg per meter of length. The cable is such that
before the traffic light is added/hanged, the hori-
zontal distance from the lowest point of the cable
to the end point (s) is/are 20 m. The weight of the
traffic light leads to deflection such that position
A changes as soon the the weight of the light is
added.
Answer the following:
(a) The above is catenary, explain why?
20 m
20 m
(b) Determine the vertical deflection ô of the
lowest point A relative to its position before
the signal is added.
B
(e) Show that the force at lowest point A acts
horizontal when the traffic light weight is
zero (N/B: before the weight acts on the ca-
ble).
50 kg
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