Nature of Forces

# Nature of Forces - Push/Pull Forces ( F ): Forces exerted by

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Introduction to Forces Field Forces : No contact is necessary – can act over space Force of gravitational attraction (F g ) (a.k.a. Weight)- Force of attraction between masses *Near the surface of the earth F g = mg, where m is the mass of the object in kg and g is the acceleration due to gravity (g= 9.8 m/s 2 near surface) Mass and Weight are not the same thing! Electrostatic Force (F e ) : Force of attraction or repulsion between electrically charged objects (a.k.a. Coulomb Force) Magnetic Force ( F B ): Force of attraction or repulsion between like or unlike poles of a magnet. Contact Force s: Contact is necessary, can not act over space
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Unformatted text preview: Push/Pull Forces ( F ): Forces exerted by people/animals/gypsies Tension ( T or F T ): Forces exerted in ropes, cables, chains, etc. Acts in both directions Friction ( F f ): Resistive force between two surfaces. Always opposes motion. Air Resistance ( F a or F f ): Resistive force acting on objects moving through air. Often can be ignored because force is negligible. Normal Force ( F N ): Force exerted by a surface, perpendicular to the surfaces directed away from the surface If its not on this list it is not a force you can use!...
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## This note was uploaded on 01/11/2012 for the course PHYSIC 1 taught by Professor Fairport during the Spring '11 term at Fairfield.

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