How Do You Calculate the Lift Force of a Jack Screw?

[rambo 3504]

Homework Statement

What formula would I use to calculate the lift force of a Jack Screw
when I know the force exerted on the linear screw? It would be similar to the Jack used to lift a car.

Homework Equations

The Attempt at a Solution

 

[Dr.D]

Well, you could draw FBDs for the links and set it up as a conventional statics problem,
or,
you could do some kinematics and use virtual work. Your choice!

 

[rambo 3504]

Thanks Dr.D

 

[rambo 3504]

Here is a FB of my linkage.