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Determine the tension developed in cord DE required for equilibrium of the lamp. Express your answer to three significant figures and include the appropriate units.
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Determine the tension developed in cord DE required for equilibrium of the lamp. Express your answer to three significant figures and include the appropriate units.

User Jungeun
by
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1 Answer

5 votes

Answer:

Fde = 1080 N (3 sig fig)

Step-by-step explanation:

Taking point E

Sum of forces at E in x direction:

Fde cos (30) - Fcd = 0 ..... Eq 1

Sum of forces at E in y direction:

Fde sin (30) - Wf = 0 ..... Eq 2

Wf = m*g = 55 * 9.81 = 539.55 N

Using Eq 2 to evaluate Fde

Fde = Wf / sin (30) = 539.55 / sin (30) = 1079.1 N

Answer: Fde = 1080 N (3 sig fig)

User Talbot
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