I need to calculate the tension on a cable. cable comes off a winch, travels up at a 45 deg angle over a pulley which is 2m above the height of the winch. The cable goes down at a 45 deg angle and connects to a 7m pipe 2m from a hinge point directly below the pulley. the pipe weighs 7kg/m. This unit is going to be used in remote heliportable wireline work in northern alberta. The 7m pipe has a cable system on the end that is used to lift pressure control equipment on to the well. I want to put some engeneering support to the design so we can be confident of the cable size and winch capacity prior to building the system.