PHYS 1080 Lecture Notes - Lecture 2: Free Body Diagram, Resultant Force, International System Of Units

• School: University of Guelph
• Department: Physics
• Course: PHYS 1080
• Professor: The Great Orbax

Document Summary

A force is an interaction between two bodies, an object and an agent. Something without which there is no acceleration. Something which can be produced with or without contact. An object in a state of uniform motion will remain doing so unless acted on by a non-zero resultant force. If a resultant force fr acting on an object leads to an acceleration (a) in the direction of the force. |a| is proportional to |fr| and inversely proportional to the object"s mass (f=ma), (fnet = i fi = ma) For every force (f) there is an equal but opposite reaction force (-f), (fa on b = -fb on a) The proportionality constant between the net force acting on an object and the resulting acceleration. A measurement of the gravitational force acting on an object. A vector quantity, directly towards earth"s centre. Si units are newtons (1 n = kg*m/s2)