2. A helicopter accelerates upward with a cable of mass 12 kg and length 20 m attached to a mass of 1500 kg hanging vertically below it. If a transverse pulse initiated by wobbling of the mass takes 0.238 seconds to travel the length of the cable, what is the upward acceleration of the helicopter?
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2. A helicopter accelerates upward with a cable of mass 12 kg and length 20 m attached to a mass of...
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