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Monday, September 15, 2008

Fundamentals : Forces

Some naturally occuring forces:
Gravitational forces due to masses
Electric force due to charges
Magnetic forces due to moving charges in magnetic field
Contact forces due to reaction perpendicular to the surface
Drag force due to motion in a viscous medium
Frictional forces acting parallel to contact surface.
Tension in the string or spring
Know where forces originate from to understand better the direction in which it will act.