Final answer:
A force standard that is different from a stretched spring is a weight hung from a string or lever arm, which can produce the same force repeatedly.
Step-by-step explanation:
A force standard that is different from a stretched spring is a weight hung from a string or lever arm.
By keeping the same weight and distance from the pivot, you can produce the same force repeatedly.
For example, if you hang a 1 kg weight from a string, it will produce a force of 9.8 N (Newtons) due to gravity. By keeping the same weight and distance, you can produce the same force every time.