Question74. A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne $129-\mathrm{kg}$ laser sensor that measures the thickness of the ice (see the drawing). The helicopter and the sensor both move only in the horizontal direction and have a horizontal acceleration of magnitude $2.84 \mathrm{~m} / \mathrm{s}^{2}$. Ignoring air resistance, find the tension in the cable towing the sensor.