The answer depends on the size of the carousel and the horses. The answer can be calculated if the carousel is a standard size and the horses are the same size.
The circle of a carousel is the same as the circle of a car. The circle for a standard carousel is around 62.8 feet.
It takes approximately 7.69 seconds for the carousel to make one complete revolution since it takes 0.13 revolutions per second. It will take 15.38 seconds (7.69 seconds x 2) for the carousel to make two revolutions.
Since each horse is mounted on a carousel at a specific distance from the center, we can calculate how long it will take the horse to go around twice by taking the carousel’s circumference and dividing it by the horse’s distance from the center. If the horse is mounted 5 feet from the center it will take 12.56 seconds for the horse to go around twice.
It will take 15.38 seconds for a horse to go around twice if the carousel is a standard size.