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.(adsbygoogle = window.adsbygoogle || []).push({});

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.

http://www.walchem.com/email/movies/lift.jpg [Broken]

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Ski Lift

**Physics Forums | Science Articles, Homework Help, Discussion**