Hitch balls are a convenient way to connect whatever you need to haul to your truck. They range from 1 78" to 2 inches in diameter and can tow up to 12,000 pounds and 21,000 pounds respectively.
Inspect the hitch ball, coupler, and coupler release to identify the issue. Adjust the vehicle's position and use a tongue jack to raise and lower the trailer. Lubricate the ball and coupler with WD-40 to remove rust and keep things from getting stuck again.
Preventing a trailer stuck on the ball involves getting the correct hitch size, lubricating connections regularly, and storing the hitch ball in a dry location.