A bird sits on a telephone wire midway between two poles 20
A bird sits on a telephone wire midway between two poles 20 meters apart. The wire, assumed weightless, sags by 50 cm. If the tension in the wire is 90 Newtons, what is the mass of the bird?
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a bird sits on a telephone wire midway between two poles 20 meters apartnbsp the wire assumed weightless sags by 50
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