I'm planning on building a small ski lift for my kids. It's been 20 years since I've taken a physics class so I'm lucky to remember what gravity is. Here's a poor image of the hill. I would like to know the following: A) how much lbs of tension is against the lift wire? B) how heavy should the counter weights (D&E) be so they don't rip out of the ground? Facts and Assumptions C) distance between towers A&B and B&C are 200' each D) Elevation between towers A&B is 60', B&C is 40' E) Would like to be able to lift a total of 4 people at a time...assume 175 lbs/person F) Not as important...lift wire weight is 300 lbs total Feel free to assume anything else that's missing. I'm basically looking for some formulas I can use to play with the numbers.