A 400-N Uniform Vertical Boom Is Attached to the Ceiling

A 400-N uniform vertical boom is attached to the ceiling by a hinge, as shown.An 800-N weight W and a horizontal guy wire are attached to the lower end of the boom as indicated.The pulley is massless and frictionless.The tension force T of the horizontal guy wire has magnitude:

A) 350 N
B) 400 N
C) 690 N
D) 800 N
E) 1200 N

Correct Answer:

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