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13-06-2020
Physics

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A traffic light of weight 100 N is supported by two ropes as shown in Fig. on the right. What are the tensions in the ropes?
A) 50 N
B) 63 N
C) 66 N
D) 83 N

A traffic light of weight 100 N is supported by two ropes as shown in Fig on the right What are the tensions in the ropes A 50 N B 63 N C 66 N D 83 N class=

Respuesta :

ivoryjwalters ivoryjwalters

13-06-2020

Answer: D. 83 N

Explanation:

Answer Link

MathPhys MathPhys

13-06-2020

Answer:

83 N

Explanation:

Draw a free body diagram of the traffic light. There are three forces:

Weight force 100 N pulling down,

and tension forces T pulling along the ropes.

Sum of forces in the y direction:

∑F = ma

2 (T sin 37°) − 100 = 0

T = 83 N

Answer Link

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