A traffic light of mass m (= 22 kg) hangs above the street by two wires, both of

ID: 1709691 • Letter: A

Question

A traffic light of mass m (= 22 kg) hangs above the street by two wires, both of which make an angle (= 35 degrees) with the vertical.

a.) Show that the tension in both ropes is the same. (Hint: use the horizontal direction.) (NOT FOR CREDIT, but important for the next parts.)

b.) How much is the tension in each wire?
? N

c.) Find the tension for = 0 degrees.
? N

Is this greater than or less than your answer from part b? And what is the significance of your numerical answer at zero degrees? Explain.

d.) Checking another limit: Explain why it is impossible to hold up the street light with the wires being perfectly horizontal.

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A traffic light of mass m (= 22 kg) hangs above the street by two wires, both of

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