negative force

From: shivam ghosh (
Date: Fri Jun 22 2007 - 00:42:24 CDT

Dear all namd users,

I am doing a steered molecular dynamics simulation with constant velocity

For a velocity of the order of 10^-8 A/time step for a time step equal to 2
fs the plot of the force versus time graph obtained from the log file shows
a negative value of force.

I am attaching the plot that i obtained for reference.

I am confused whether the plot from log file gives the magnitude of force(in
which case it cant be negative) or the direction as well.

I will be very thankful if anyone could shed some light on the above
mentioned problem.

Shivam Ghosh

This archive was generated by hypermail 2.1.6 : Wed Feb 29 2012 - 15:44:52 CST