[2001 ZTS]

OAC_Sparky,Mar 25 2006, 07:49 PM Wrote:

nass,Mar 25 2006, 07:33 PM Wrote:... so is it in theory possible to rig up a pulley system that would allow a focus to do the same thing??
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Yes, the amount of weight that a pulley system can lift (or pull) is (IIRC--it's been a while) proportional to the number of turns over the pulley.

ie. A pair of blocks, each having 3 pulleys would have 5 turns (ie ropes between the blocks) thus a Focus could lift a (5x1500lbs) 7500lb deadweight. Add another couple of pulleys, and it can lift more.

The downside, is that you trade force for distance. To lift the load "x" distance you would have to pull 5x the length of rope.
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Yup.

Every complex machine in existance (including a Ford Focus) is made up of and uses the same principals as, the "six simple machines" (or 5 if you consider, like I do, the screw to be merely a wound up wedge) and nothing else. Name any function, action, part or system in any mechanical device and it can all be linked back to the simple machines.

My 5 year old kid likes and understands this site, I hope you all do too:

http://www.sciencetech.technomuses.ca/engl....cfm#sixclasses