The see- saw is a lever. It's balanced on a fulcrum. It moves up and down. There is a pressure on one side that pushes the load on the other side up. Our see-saw has too much weight and the pressure is launching the load.
Tweezers are a kind of lever .
They take splinters out of your skin. You move your hand to move them. They have a fulcrum which is the turning point. Our tweezers are pulling a tick out of the monkey's back. Our wheel barrow is a lever .