World 1 · Levers · 6 minFirst-Class Levers
Fulcrum in the middle — the crowbar
Teaching this? Open projector mode
In a first-class lever the fulcrum sits between the effort and the load — think seesaw, scissors, or a crowbar prying up a crate.
Because the fulcrum is central, you can place it near the load for a huge force boost.
Check yourself
Which of these is a first-class lever?
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