•Force toolbar > Calculate Forces is active.

•A minimum of one Part in the kinematic-chain that is kinematically-defined has mass(kg) - see CAD-Line dialog-box | Mass Properties.

AND/or

•A Spring FB applies a Force between two Points and two Parts in the kinematic-chain.

AND

•Filters toolbar > Display Part-Outlines is active

Each Force-Vector is the instantaneous Force that ACTS-ON a Point and Part in the kinematic-chain.

Location: as rays from Points at Pin-Joints, Slide-Joints, Springs, Cam Contacts, gear contacts, belts.

Direction: they are in the direction of the Force-Vector

Length: their length is scaled to the magnitude of the Force - see Vector scaling buttons

Magnitude: the Force that acts on the Point is at the arrowhead of each vector

Color: - see Colors: Part-Outlines, and Force-Vectors.

The Torque-Vector is the instantaneous Torque to drive the kinematic-chain.

Location: at a Pin-Joint that you select to drive the kinematic-chain - see also: Configure Power Source

Length: proportional to the magnitude of the Torque.

Important:

The Torque Vector does NOT include the torque to accelerate the inertia of a Servo-motor or Gearbox

To select and size a Servo-motor and Gearbox - see Kinematic Servo-motor and Gearbox Sizing.

The Driving-Force is the instantaneous Force to drive the kinematic-chain.

Location: at a Slide-Joint that you select to drive the kinematic-chain - see also: Configure Power Source)

Length: proportional to the magnitude of the Driving-Force.

Important:

The Driving-Force does NOT include a Linear Servo-motor to drive the kinematic-chain.

We do NOT have a database of Linear Servo-motors.

When you show Force-Vectors, the color of each Part-Outline is changed.

The colors become the same color as the Force-Vector that ACTS-ON the Part, at a Point in the Part.

TOP-TIP

To help identify which Force-Vectors that act on a Part:

1.Hover above a Part-Outline

The Part-Outline AND the Force-Vector that ACT-ON the Part will change to the selected color, usually RED.  

Use Configure Power Source to edit the color of each Force-Vector, and/or to hide Force-Vectors that act on different Parts.