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Unformatted text preview: PHY101: Is gravity getting you down?: Forces http://www.cartoonstock.com/lowres/rmc0074l.jpg Forces Newtons First Law: An objects velocity does not change if and only if the net force acting on the object is zero Inertia is an objects resistance to changes in its velocity. What is net force? What is net force? Force is a vector , and the net force, F net , on an object is the vector sum of all the forces acting on an object. Forces Newtons First Law: An objects velocity does not change if and only if the net force acting on the object is zero; inertia For an object in equilibrium, F x = 0 and F y = 0 . Newtons Second Law: F = m a , where m is the objects mass. Forces Newtons First Law: An objects velocity does not change if and only if the net force acting on the object is zero; inertia For an object in equilibrium, F x = 0 and F y = 0 . Newtons Second Law: F = m a , where m is the objects mass. Newtons Third Law: In an interaction between two objects, each object exerts a force on the other. These two forces are equal in magnitude and opposite in directionforces exist in pairs! Gravity...
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This note was uploaded on 05/18/2008 for the course PHY 101 taught by Professor Schwarz during the Fall '08 term at Syracuse.
 Fall '08
 Schwarz
 Resistance, Force, Gravity, Inertia

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