[source: http://hyperphysics.phy-astr.gsu.edu/hbase/pasc.html]
[source: http://fluidpowerjournal.com/2015/01/specifying-pneumatic-cylinders-part-1/]
[source: http://www.engineeringtoolbox.com/pneumatic-cylinder-force-d_1273.html]
[source: http://www.engineeringtoolbox.com/pneumatic-cylinder-force-d_1273.html]
[source: http://www.applied.com/site.cfm/TheoreticalPushandPullForces.cfm
[source: http://www.peninsularcylinders.com/HH_Links/HH_Air_NFPA_Cylinders/HH_Air_NFPA_Mounting%20Style.htm]
Determin the lifting capacity of the crane provided a 15,000 lb capacity cylinder is used.
[source: http://www.womackmachine.com/engineering-toolbox/design-data-sheets/angle-problems-in-fluid-power-applications.aspx]
[source: http://www.engineersedge.com/mechanics_machines/scissor-lift.htm]
[source: http://www.engineersedge.com/mechanics_machines/scissor-lift.htm]