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33 Cards in this Set
- Front
- Back
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System |
A group of parts that work together to accomplish a certain task. |
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Pyshical System |
Pyshical parts that work together to accomplish a task. |
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Social Systems |
People or organisms working together to perform tasks and establish relations. |
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Force |
A push or pull |
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Side effects |
The unintended or undesired outputs of a system |
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Systems Thinking |
Consodering side effects, input and output of systems |
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Magnitude |
The quantity of force/ how strong the force is. |
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Friction |
A force that resists movement of objects sliding or rolling over one another. |
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Static friction |
Hold a motionless object where it is. |
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Sliding friction |
When two surfaces do slide over one another, sliding friction is like a brake |
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Lubricant |
reduces friction and causes surfaces to slide more easily. |
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Mechanical Adv. |
The ratio of output force to input force for a given machine. |
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Work |
The result when force moves an object a certain distance. |
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Energy |
The ability to apply a force to move an object a certain distance. |
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F #1 |
effort arm length load arm length |
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F #2 |
input distance output distance |
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F#3 |
measured output force measured input force |
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Work is mesured in... |
Newton metres or joules |
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Four fundemental forces |
Gravitational force, Electromagnetic force, strong nuclear force, weak nuclear force. |
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All force has.... |
magnitude and direction |
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Some industries that have systems are... |
Communications Transportation Green Construction |
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Some lubricants are... |
Engine oil, ski wax, butter etc.. |
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1 Newton metre =...... |
1 jouel |
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Mechanical Efficiency. Mechanical Efficiency. |
The percentage of work input that is turned into useful work output. |
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M(E) Formula |
Output work (fxd) Input work (fxd) x100 |
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Gravitational force |
Pulls objects towards earths surface. All objects experience gravity though it may be subtle. |
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Electromagnetic force. |
The force responsible for many small motions and activities we see in everdaylife. Magnetic push or pull. Acts between charged particles. |
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What are some inputs? |
Force Energy Raw material. |
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Lost energy in social systems |
Using more material, time and human energy than needed. |
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Newton equals.... |
9.8 neutons = 1 kg |
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Direction |
The way the force is pushing or pulling. |
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Transformed energy. |
Changes from one form of energy to another. |
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Transferred energy |
Energy moved from one place to another. |
