Newton's second law and tension!!!! 1. The problem statement, all variables and given/known data A helicopter is lifting two crates simultaneously. One crate with a mass of 139 kg is attached to the helicopter by cable A. The second crate with a mass of 88 kg is hanging below the first crate and attached to the first crate by cable B. As the helicopter accelerates upward at a rate of 1.2 m/s2, what is the tension in each of the two cables (in kN)? 2. Relevant equations Fnet=ma 3. The attempt at a solution I drew a free body diagram and for the first crate (139 kg) I had tension pointing upwards and gravity pointing downwards. So I did the following calculations: -mg + Ta= ma Ta= m (a + g) = 139 (1.2 +9.8) = 1529 N = 1.529 kN For the second crate (88 kg), I had tension of the second crate pointing upwards, tension of the first crate pointing downwards and gravity pointing downwards. So I did the following calculations: -mg- 1529 + Tb= ma Tb= ma + mg + 1529 = m (a+g) + 1529 = 88 (1.2 + 9.8) + 1529 = 2497 N = 2.497 kN Both answers were wrong so I'm not so sure what I'm supposed to be doing for this question. Any help will be appreciated!!!