if you choose the second one of the four radio buttons on the top right, the vector arrows of the exerted forces will be drawn for each of the eight pendulum masses: the weight force will be painted black, the force exerted by the string blue.
Repeat this setence, but with the correct capitalization.
If you choose the second one of the four radio buttons on the top right, the vector arrows of the exerted forces will be drawn for each of the eight pendulum masses: the weight force will be painted black, the force exerted by the string blue.