first class levers adapted from brain pop. levers allow us to move things more easily by magnifying...
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Levers have four parts:TRANSCRIPT
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First Class Leversadapted from Brain Pop
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Levers allow us to move things more easily by magnifying our efforts.
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Levers have four parts:
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1) The lever itself which is a length of relatively stiff material.
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2) The fulcrum is the plane on which the lever balances or pivots.
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3) The load is the weight or resistance which much be lifted or overcome.
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4) The effort is the force that you apply to the lever.
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A class one lever has the fulcrum between the load and the effort.
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Fulcrum
Load or resistance Effort or
force
Lever
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Y
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Distance and effort are interrelated. If you increase the distance over which you exert force, you can reduce the force exerted.
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IIf I asked you to take 500 books to the library…
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You could take 500 at one time with great force and
less distance…..
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Or you could carry one book at a time for great distance
and less force
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Work itself never changes, but you can adjust distance and effort.If you increase effort, distance decreases. If you decrease effort,
distance increases.
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Examples of First-class levers
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