# PTSF

Returns force component due to Constraint_PTSF element in reference frame of marker RM. jflag indicates whether force acting on I or J marker is desired.

## Format

PTSF(id, jflag, comp, RM)

## Arguments

id
The ID of the Constraint_PTSF element.
jflag
Returns the force acting on the I marker and 1 returns the force acting on the J marker.
component
1
returns the force magnitude.
2
returns the force x component.
3
returns the force y component.
4
returns the force z component.
5
returns the torque magnitude.
6
returns the torque x component.
7
returns the torque y component.
8
returns the torque z component.
RM
The reference frame in which components are reported. RM=0 implies global frame.

## Example

<Post_Request
comment = "frc-expr"
id      = "70000044"
type    = "EXPRESSION"
expr1   = "PTSF(10,0,1, 20)"
expr2   = "PTSF(10,0,2, 20)"
expr3   = "PTSF(10,0,3, 20)"
expr4   = "PTSF(10,0,4, 20)"
expr5   = "PTSF(10,0,5, 20)"
expr6   = "PTSF(10,0,6, 20)"
expr7   = "PTSF(10,0,7, 20)"
expr8   = "PTSF(10,0,8, 20)"
/>

This request element stores the PTSF element forces into column vectors F1 through F8 of the request "frc-expr".
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