Exercise machine enhancements

An exercise machine, comprising:

• a tension generating device;
• a translatable arm mount coupled to the tension generating device;
• an arm coupled to the translatable arm mount;
• a cable coupled to the tension generating device via the arm;
• and
• a track for the translatable arm mount to slide along one dimension of translation, wherein the arm is rotatable horizontally, wherein a plurality of teeth are located around at least an arc of a circumference of a member of the arm in a top view of the arm, wherein the member of the arm is a top member of the arm or a bottom member of the arm, wherein first teeth of a device locking member prevent the arm from rotating horizontally by interacting with second teeth of the plurality of teeth when the first teeth of the device locking member are coupled with the second teeth of the plurality of teeth, and wherein the arm is free to rotate horizontally when the device locking member is in a pulled back position from the member of the arm.