In physical contexts, 'fulcrum' refers to the actual point that supports movement. The engineer explained that the fulcrum must be stable for the bridge to open smoothly.
Pro Tip 2/3
Not Always Visible
'Fulcrum' may be an unseen part inside a mechanism, vital for its operation. The clock stopped working because the fulcrum in the mechanism was displaced.
Pro Tip 3/3
Balance Essential
'Fulcrum' implies balance, as it's the stabilizing factor in a lever system. Place the fulcrum under the board's center to evenly balance the weight.