A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 131-kg laser sensor which measures the thickness of the ice...

A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 131-kg laser sensor which measures the thickness of the ice (see the drawing). The helicopter and the sensor move only in the horizontal direction and have a horizontal acceleration of magnitude 2.70 m/s2. Ignoring air resistance, find the tension in the cable towing the sensor.