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8 Cards in this Set
- Front
- Back
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______ was built with the help of a ___-____ lever.
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Stonehenge
first-class lever |
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Describe the first-class lever.
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The effort arm is on one end and the resistance arm is one the other end. The fulcrum is between the two arms.
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___ ___ is a measure of the "force-multiplying ability" of a machine.
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Mechanical advantage
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What is the formula for mechanical advantage for a first-class lever?
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M.A. = resisting force/applied force
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In a ___ -___ lever, the fulcrum is on one end and the effort on the other end - the resistance arm is in between.
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second-class lever
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Give an example of a second-class lever.
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A wheelbarrow, door hinge
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A ___ -____ lever, the fulcrum is on one end and the resistance on the other - the effort is in the middle.
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third-class lever
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Give an example of a third-class lever.
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your arm, a broom, a shovel
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