Statement I: When a bird alights on a stretched telegraph wire, the tension in the wire increases by more than the weight of the bird. Statement II: The wire sags only slightly, so a small sag angle f

Question

Statement I: When a bird alights on a stretched telegraph wire, the tension in the wire increases by more than the weight of the bird. Statement II: The wire sags only slightly, so a small sag angle forces each side of the wire to pull with a tension much larger than half the bird weight.

TestHub · Accepted Answer

Balance gives 2 T sin θ = W with θ small, so the added tension is much greater than W /2 , and the total increase exceeds W . Both statements are true. Option A.

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