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natka813 [3]
4 years ago
9

Determine the tension developed in the cable ab required to support the traffic light, which has a mass of 19 kg . take h = 3.5

m.
Physics
1 answer:
Zepler [3.9K]4 years ago
8 0
Only two forces acts on the traffic light: the tension T of the cable (upward) and the weight of the traffic light (downward). The weight is
mg=(19 kg)(9.81 m/s^2)=186.39 N
If the traffic light is at equilibrium, the resultant of the two forces must be equal to zero (Netwon's second law):
T-mg=0
Therefore the tension of the cable is
T=mg=186.39 N
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