I’m just 31 so a lot of things already had changed for my generation but I was old enough to play on monkey bars that werewolf made of metal lol
werewolf — lol typo made on my android keyboard
There were steel swing sets with 8 to 10 foot chains. You could swing so high you were guaranteed to break something if you fell off. The big trick was to swing so hard you could do a 180 over the top.
There were also metal see-saws that were about 12 feet total, so you were almost 5 feet off the ground on the upswing. Some dirty rat kids (older brothers) would jump off when they were on the downswing and the kid on the upswing would go crashing down to the ground right onto their tailbone. There were also the steel and wood merry-go-rounds in the playgrounds. Hold on, run around until it was going fast, jump on, and then all the kids lean back as far as they could to keep the momentum going.
Now they don't even teach physics properly in high school unless it's about celebrating a gay physicist, but these playground adventures were one of the ways we learned about mechanical dynamics.