Hi everybody!
I am calculating a scissor lift for a design project in one of my classes. My question is about a multi-scissor lift drawn in this picture:

phi - angle between the scissor arms and the horizontal
F - force provided by the hydraulic actuator for ejecting scissor in needed place
Wm - man's weight standing on the edge of the platform
q - distributed load of the load platform
Wf - combined weight of scissor themselves
questions:
1. How to calculate force F with prove? is it right to use some of these formula https://www.engineersedge.com/mechan...issor-lift.htm
2. Are the Nb and Nc (supporting forces) determined correctly?

p.s. my English is not perfect yet

yours *****fully