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Drag force from cable

  1. Oct 30, 2014 #1
    Hi,

    I have a raft that move along in a tunnel with the water flow (no propelling engine). A neutrally bouyant cable is attached to the device at the back to supply power for the apparatus on the raft. The cable is about 14mm in diameter and the max length of cable can be 5km. May I ask how can I calculate the drag force caused by the cable?
     
  2. jcsd
  3. Oct 30, 2014 #2
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