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Related Flashcards
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Cards In This Set
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What is power?
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A quantity that measures the rate at which work is done
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Know how to solve for power. How do you measure power? (units)
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Work over time, watts, W
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What does potential energy depend on?
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Mass & height
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How many types of simple machines exist?
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Six
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What does an inclined plane change?
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Multiply and redirect force
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What are the Si units for work?
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Joules
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Know the difference between the three classes of levers.
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1- middle fulcrum, 2- one end with the middle force on top and on the other end pushing up on top, 3- fulcrum on one end middle force pushing up and under
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How does a lever increase force?
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Force is transformed
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HOW DO YOU MEASURE WORK?
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Joules
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How is a wheel and axle like a lever?
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It is a lever connected to a shaft.
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How do machines help people do work?
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Redistributing the work we put in
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What does mechanical advantage tell you about a machine?
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What they can do
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What is a compound machine?
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A machine made of more than one simple machine
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How do you measure energy?
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Joules
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Know the difference between kinetic and potential energy.
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Potential- stored, kinetic- moving
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