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juin [17]
4 years ago
10

The guy wire BD exerts on the telephone pole AC a force P directed along BD. Knowing that P must have a 720-N component perpendi

cu- lar to the pole AC, determine (a) the magnitude of the force P, (b) its component along line AC.

Computers and Technology
1 answer:
AysviL [449]4 years ago
8 0

Answer:

Explanation:

  • From the diagram, tanФ = opp/Adj = 2.4m/7m
  • tanФ = 0.3429. Ф = arctan ( 0.3429 )
  • Therefore, Ф = 18.92°

Given force perpendicular to AC from the diagram = 720N

  • Resolving vertically; PsinФ = 720

a) P = 720/sin18.92° = 2220N = the magnitude of the force P

b) To get component along line AC;

  • resolving horizontally, component along AC = PcosФ
  • = 2220 x cos 18.92° = 2100N

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