A leever is a tool To move something heavy Using less force thann We'd else need to levy In two parts it comes Fulcrum and the Beam Providing leverage They're the perfect team A leever gives to us Mechanical advantage So greater are the loads That we can manage [Break] Now let's define each term A Beam is bar or rod, firm And Fulcrums are a pivot point To which our bars or rods are joint [Break] With force to Beam applied The “Effort” we provide And as for obb-ject to be moved The “Load” is the term that's used [Break] A leever is a tool To move something heavy Using less force than We'd else need to levy In two parts it comes Fulcrum and the Beam Providing leverage They're the perfect team A leever gives to us Mechanical advantage So greater are the loads That we can manage [Break] So say that we want To shift big boulders But have we, with regret Puny arms and shoulders [Break] Place a small stone nearby Big boulder we wish to pry This small stone will become Our pivot point or "Fulcrum" [Break] Take long firm metal rod Grip this Beam at furthest edge Then other end of rod Between stone and boulder wedge [Break] Now at last, when we push down The Effort is amplified Meaning force on boulder Is more than we supplied [Break] Rod Beam pivots 'round Our stone fulcrum source On boulder Load this exerts A stronger turning force [Break] To force on Load amplify These principles apply: [Break] Move Effort from Fulcrum A greater length away Or Load and Fulcrum Act to closer array [Break] A leever is a tool To move something heavy Using less force than We'd else need to levy In two parts it comes Fulcrum and the Beam Providing leverage They're the perfect team A leever gives to us Mechanical advantage So greater are the loads That we can manage
