I was wondering how a threashing macine works and how was it made, I know that it is used by farmers to cut the heads off of wheat. my last question is that what part of the united states was it used in
Work is defined as force times distance. If you move something over 2 meters, and you need a force of 15 N for doing that, you'll deliver 30 Joules of work.
the work a machine does is the work outputwhat it takes to do the work is the work input Sources; http://wiki.answers.com/Q/The_work_that_the_simple_machine_does_is_called_the_work#ixzz1XBOCqF6K