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En equilibrio es T + E - m g = 0; luego T = m g - e
T = 1,2 g/cm³ . 980 cm/s² . (10 cm)³ - 1 g/cm³ . 980 cm/s² . (10 cm)³ =
T = 196000 dinas . 1 gf / 980 dinas = 200 gf
Opción c.
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