We are making a Mechanical Car Lifting Jack as part of our Manufacturing Process course. A few questions :- 1. It looked too simple to me, but sometimes it doesn't. Like it has quite a nice assembly. Where do you put it on difficulty scale ? 2. What do you suggest that we do calculations for the forces and material etc because we want it to be able to lift the car? 3. What should be our initial target ? Like design, calculations etc..What should be the precise procedure? We have only 8-9 weeks for the project.