[gmx-users] force calculation

[mahdiyeh poorsargol]

Dear gromacs user,
Does anyone know how to calculate the force exerted on the particle in the
simulated system from the output files?
I simulated  a system including two parallel surfactant-covered graphene
sheets, separated with the inter-sheet distance of 34.0 Å. I want to
compute the force average which need to hold them at the current location
or force exerted on a graphene sheet.
Can anyone suggest a method?
Thank You in advance