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Units of Measurement

Units of Measurement. ENGR 2214 Dr Simin Nasseri MET Department, SPSU. Definitions. Basic Quantities are: Length (Meter, Foot) Time (Second) Mass (Kilogram, Slug) Force (Newton, Pound force) Units:

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Units of Measurement

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  1. Units of Measurement ENGR 2214 Dr Simin Nasseri MET Department, SPSU

  2. Definitions • Basic Quantities are: • Length (Meter, Foot) • Time (Second) • Mass (Kilogram, Slug) • Force (Newton, Pound force) • Units: • Basic quantities (force, mass, length, time) are related by Newton’s second law. • Units used to measure quantities are not all independent. • Three of four units (mass, length, time), called base units, are arbitrarily defined and the fourth (force) is derived.

  3. Units

  4. Units Unit conversions: Force: 1 lb = 4.4482 N Mass: 1 slug = 14.5938 kg length: 1 ft = 0.3048 m

  5. Conversion factors

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