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A lever is any kind of rigid bar that sits on a pivot point or fulcrum and rotates about that point. It may be used to move a heavy object with a force.

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Presentation on theme: "A lever is any kind of rigid bar that sits on a pivot point or fulcrum and rotates about that point. It may be used to move a heavy object with a force."— Presentation transcript:

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2 A lever is any kind of rigid bar that sits on a pivot point or fulcrum and rotates about that point. It may be used to move a heavy object with a force that is smaller than the weight of the object. A lever has three parts 1.fulcrum or pivot point 2.load 3. effort (the force)

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5 load effort fulcrum

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12 loadeffortfulcrum

13 load effort fulcrum

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16 loadeffortfulcrum

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18 The effort is applied somewhere in between by a muscle attached above the fulcrum, on the upper arm.

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