A pendulum mass is supported by a small-diameter, light-weight carbon fiber rod.  It is hung from a force sensor, which in turn is supported on the shaft of a rotary motion sensor.  The angle of the pendulum swing and the force along the support rod are simultaneously plotted as functions of time.

In addition, a graph of Angle swing vs. Force can also be displayed.

Investigations with different release angles and length of pendulum can be performed.